--- _id: '14990' abstract: - lang: eng text: We investigate optical microresonators consisting of either one or two coupled rectangular strips between upper and lower slab waveguides. The cavities are evanescently excited under oblique angles by thin-film guided, in-plane unguided waves supported by one of the slab waveguides. Beyond a specific incidence angle, losses are fully suppressed. The interaction between the guided mode of the cavity-strip and the incoming slab modes leads to resonant behavior for specific incidence angles and gaps. For a single cavity, at resonance, the input power is equally split among each of the four output ports, while for two cavities an add-drop filter can be realized that, at resonance, routes the incoming power completely to the forward drop waveguide via the cavity. For both applications, the strength of the interaction is controlled by the gaps between cavities and waveguides. author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Manuel B. full_name: Berkemeier, Manuel B. last_name: Berkemeier - first_name: Alexander full_name: Menzel, Alexander last_name: Menzel - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Ebers L, Hammer M, Berkemeier MB, Menzel A, Förstner J. Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter. OSA Continuum. 2019;2:3288. doi:10.1364/osac.2.003288' apa: 'Ebers, L., Hammer, M., Berkemeier, M. B., Menzel, A., & Förstner, J. (2019). Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter. OSA Continuum, 2, 3288. https://doi.org/10.1364/osac.2.003288' bibtex: '@article{Ebers_Hammer_Berkemeier_Menzel_Förstner_2019, title={Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter}, volume={2}, DOI={10.1364/osac.2.003288}, journal={OSA Continuum}, author={Ebers, Lena and Hammer, Manfred and Berkemeier, Manuel B. and Menzel, Alexander and Förstner, Jens}, year={2019}, pages={3288} }' chicago: 'Ebers, Lena, Manfred Hammer, Manuel B. Berkemeier, Alexander Menzel, and Jens Förstner. “Coupled Microstrip-Cavities under Oblique Incidence of Semi-Guided Waves: A Lossless Integrated Optical Add-Drop Filter.” OSA Continuum 2 (2019): 3288. https://doi.org/10.1364/osac.2.003288.' ieee: 'L. Ebers, M. Hammer, M. B. Berkemeier, A. Menzel, and J. Förstner, “Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter,” OSA Continuum, vol. 2, p. 3288, 2019.' mla: 'Ebers, Lena, et al. “Coupled Microstrip-Cavities under Oblique Incidence of Semi-Guided Waves: A Lossless Integrated Optical Add-Drop Filter.” OSA Continuum, vol. 2, 2019, p. 3288, doi:10.1364/osac.2.003288.' short: L. Ebers, M. Hammer, M.B. Berkemeier, A. Menzel, J. Förstner, OSA Continuum 2 (2019) 3288. date_created: 2019-11-15T07:21:20Z date_updated: 2022-01-06T06:52:13Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1364/osac.2.003288 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2019-11-15T15:33:26Z date_updated: 2019-11-15T15:33:26Z file_id: '15012' file_name: 2019-11-12 Ebers - Add Drop Filter - OSA continuum (official version).pdf file_size: 882779 relation: main_file file_date_updated: 2019-11-15T15:33:26Z has_accepted_license: '1' intvolume: ' 2' keyword: - tet_topic_waveguides language: - iso: eng main_file_link: - open_access: '1' url: https://www.osapublishing.org/osac/abstract.cfm?uri=osac-2-11-3288 oa: '1' page: '3288' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication: OSA Continuum publication_identifier: issn: - 2578-7519 publication_status: published status: public title: 'Coupled microstrip-cavities under oblique incidence of semi-guided waves: a lossless integrated optical add-drop filter' type: journal_article user_id: '158' volume: 2 year: '2019' ... --- _id: '7720' abstract: - lang: ger text: 'Die Erfindung betrifft einen optischen Übergang zwischen zwei optischen Schichtwellenleitern. Dazu ist eine Anordnung vorgesehen aus einem ersten optischen Schichtwellenleiter (2) und einem zweiten optischen Schichtwellenleiter (3), wobei der erste optische Schichtwellenleiter (2) und der zweite optische Schichtwellenleiter (3) voneinander verschiedene über ihre jeweilige Länge konstante Dicken (d, r) aufweisen, der erste optische Schichtwellenleiter (2) mit dem zweiten optischen Schichtwellenleiter (3) mittels einer optischen Schichtwellenleiterstruktur (4) verbunden ist, die über ihre gesamte Länge (w) eine Dicke (h) aufweist, die zwischen der Dicke (d) des ersten optischen Schichtwellenleiters (2) und der Dicke (r) des zweiten optischen Schichtwellenleiters (3) liegt. Erfindungsgemäß ist die Dicke (h) der optischen Schichtwellenleiterstruktur (4) über die gesamte Länge (w) der optischen Schichtwellenleiterstruktur (4) konstant. Damit wird eine Möglichkeit für einen effizienten und mit geringen Verlusten behafteten Übergang zwischen zwei optischen Schichtwellenleitern mit unterschiedlicher Dicke bereitgestellt. ' - lang: eng text: The invention relates to an optical junction between two optical planar waveguides. For this purpose, an arrangement is provided of a first optical layer waveguide (2) and a second optical slab waveguide (3), wherein the first optical layer waveguide (2) and the second optical slab waveguide (3) different from each other is constant over their respective length of thicknesses (d, r ) which the first optical layer waveguide (2) with the second optical film waveguide (3) (by means of an optical layer waveguide structure 4) is connected, which (along their entire length w) has a thickness (h) which is between the thickness (d) the first optical waveguide layer (2) and the thickness (r) of the second optical waveguide layer (3). According to the invention, the thickness (h) of the optical layer waveguide structure (4) over the entire length (w) of the optical layer waveguide structure (4) constant. Thus, a possibility for an efficient and entailing low loss transition between two optical planar waveguides is provided with different thickness. application_date: 2018-04-05 application_number: '102018108110' author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers citation: ama: Hammer M, Förstner J, Ebers L. Optical transition between two optical waveguides layer and method for transmitting light. Published online 2019. apa: Hammer, M., Förstner, J., & Ebers, L. (2019). Optical transition between two optical waveguides layer and method for transmitting light. bibtex: '@article{Hammer_Förstner_Ebers_2019, title={Optical transition between two optical waveguides layer and method for transmitting light}, author={Hammer, Manfred and Förstner, Jens and Ebers, Lena}, year={2019} }' chicago: Hammer, Manfred, Jens Förstner, and Lena Ebers. “Optical Transition between Two Optical Waveguides Layer and Method for Transmitting Light,” 2019. ieee: M. Hammer, J. Förstner, and L. Ebers, “Optical transition between two optical waveguides layer and method for transmitting light.” 2019. mla: Hammer, Manfred, et al. Optical Transition between Two Optical Waveguides Layer and Method for Transmitting Light. 2019. short: M. Hammer, J. Förstner, L. Ebers, (2019). date_created: 2019-02-15T10:25:59Z date_updated: 2022-04-27T07:35:46Z ddc: - '530' department: - _id: '61' - _id: '230' file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2019-02-15T10:21:08Z date_updated: 2019-02-15T10:21:08Z file_id: '7721' file_name: 2019-01-31 DE-Patentschrift_5349.pdf file_size: 155604 relation: main_file success: 1 file_date_updated: 2019-02-15T10:21:08Z has_accepted_license: '1' ipc: G02B 6/26 ipn: DE102018108110B3 keyword: - tet_topic_waveguides main_file_link: - url: https://patents.google.com/patent/DE102018108110B3/en page: '9' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication_date: 2019-01-31 status: public title: Optical transition between two optical waveguides layer and method for transmitting light type: patent user_id: '158' year: '2019' ... --- _id: '8634' abstract: - lang: eng text: "A rectangular dielectric strip at some distance above an optical slab waveguide is\r\nbeing considered, for evanescent excitation of the strip through the semi-guided waves supported\r\nby the slab, at specific oblique angles. The 2.5-D configuration shows resonant transmission\r\nproperties with respect to variations of the angle of incidence, or of the excitation frequency,\r\nrespectively. The strength of the interaction can be controlled by the gap between strip and slab.\r\nFor increasing distance, our simulations predict resonant states with unit extremal reflectance\r\nof an angular or spectral width that tends to zero, i.e. resonances with a Q-factor that tends\r\nto infinity, while the resonance position approaches the level of the guided mode of the strip.\r\nThis exceptionally simple system realizes what might be termed a “bound state coupled to the\r\ncontinuum”." article_type: original author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Hammer M, Ebers L, Förstner J. Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q. Optics Express. 2019;27(7):8. doi:10.1364/OE.27.009313' apa: 'Hammer, M., Ebers, L., & Förstner, J. (2019). Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q. Optics Express, 27(7), 8. https://doi.org/10.1364/OE.27.009313' bibtex: '@article{Hammer_Ebers_Förstner_2019, title={Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q}, volume={27}, DOI={10.1364/OE.27.009313}, number={7}, journal={Optics Express}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2019}, pages={8} }' chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Oblique Evanescent Excitation of a Dielectric Strip: A Model Resonator with an Open Optical Cavity of Unlimited Q.” Optics Express 27, no. 7 (2019): 8. https://doi.org/10.1364/OE.27.009313.' ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q,” Optics Express, vol. 27, no. 7, p. 8, 2019, doi: 10.1364/OE.27.009313.' mla: 'Hammer, Manfred, et al. “Oblique Evanescent Excitation of a Dielectric Strip: A Model Resonator with an Open Optical Cavity of Unlimited Q.” Optics Express, vol. 27, no. 7, 2019, p. 8, doi:10.1364/OE.27.009313.' short: M. Hammer, L. Ebers, J. Förstner, Optics Express 27 (2019) 8. date_created: 2019-03-26T10:39:00Z date_updated: 2023-01-03T10:34:29Z ddc: - '600' department: - _id: '61' doi: 10.1364/OE.27.009313 file: - access_level: closed content_type: application/pdf creator: nprante date_created: 2019-03-27T13:47:50Z date_updated: 2019-03-27T13:47:50Z file_id: '8714' file_name: oe-27-7-9313.pdf file_size: 2388537 relation: main_file success: 1 file_date_updated: 2019-03-27T13:47:50Z has_accepted_license: '1' intvolume: ' 27' issue: '7' keyword: - tet_topic_waveguides language: - iso: eng page: '8' publication: Optics Express status: public title: 'Oblique evanescent excitation of a dielectric strip: A model resonator with an open optical cavity of unlimited Q' type: journal_article user_id: '158' volume: 27 year: '2019' ... --- _id: '21462' abstract: - lang: eng text: This paper presents a new methodology by using a multiple coil array for energy transmission. The complex current strengths of the transmitting coil array are calculated by having the knowledge about of the mutual inductances and the symmetries of the transmitting coil array, so that its resulting magnetic field mainly penetrates only the receiving coil and is strongly attenuated outside. This method is used for an optimized wireless energy transmission but can also be implemented for other inductive applications. author: - first_name: Sven full_name: Lange, Sven id: '38240' last_name: Lange orcid: '0009-0007-9150-2266 ' - first_name: Maik-Julian full_name: Büker, Maik-Julian last_name: Büker - first_name: Denis full_name: Sievers, Denis last_name: Sievers - first_name: Christian full_name: Hedayat, Christian last_name: Hedayat - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Ulrich full_name: Hilleringmann, Ulrich last_name: Hilleringmann - first_name: Thomas full_name: Otto, Thomas last_name: Otto citation: ama: 'Lange S, Büker M-J, Sievers D, et al. Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission. In: Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems. VDE VERLAG GMBH; 2019:1-4.' apa: Lange, S., Büker, M.-J., Sievers, D., Hedayat, C., Förstner, J., Hilleringmann, U., & Otto, T. (2019). Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission. Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, 1–4. bibtex: '@inproceedings{Lange_Büker_Sievers_Hedayat_Förstner_Hilleringmann_Otto_2019, place={Berlin · Offenbach}, title={Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission}, booktitle={Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems}, publisher={VDE VERLAG GMBH}, author={Lange, Sven and Büker, Maik-Julian and Sievers, Denis and Hedayat, Christian and Förstner, Jens and Hilleringmann, Ulrich and Otto, Thomas}, year={2019}, pages={1–4} }' chicago: 'Lange, Sven, Maik-Julian Büker, Denis Sievers, Christian Hedayat, Jens Förstner, Ulrich Hilleringmann, and Thomas Otto. “Method of Superposing a Multiple Driven Magnetic Field to Minimize Stray Fields around the Receiver for Inductive Wireless Power Transmission.” In Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, 1–4. Berlin · Offenbach: VDE VERLAG GMBH, 2019.' ieee: S. Lange et al., “Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission,” in Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, Barcelona, Spain , 2019, pp. 1–4. mla: Lange, Sven, et al. “Method of Superposing a Multiple Driven Magnetic Field to Minimize Stray Fields around the Receiver for Inductive Wireless Power Transmission.” Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, VDE VERLAG GMBH, 2019, pp. 1–4. short: 'S. Lange, M.-J. Büker, D. Sievers, C. Hedayat, J. Förstner, U. Hilleringmann, T. Otto, in: Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems, VDE VERLAG GMBH, Berlin · Offenbach, 2019, pp. 1–4.' conference: end_date: 2019-04-11 location: 'Barcelona, Spain ' name: Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems start_date: 2019-04-10 date_created: 2021-03-12T09:46:55Z date_updated: 2024-11-30T19:32:36Z department: - _id: '59' - _id: '61' - _id: '485' keyword: - tet_enas language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/8727831 page: 1-4 place: Berlin · Offenbach publication: Smart Systems Integration; 13th International Conference and Exhibition on Integration Issues of Miniaturized Systems publication_identifier: isbn: - 978-3-8007-4919-5 publication_status: published publisher: VDE VERLAG GMBH related_material: record: - id: '9265' relation: other status: deleted status: public title: Method of superposing a multiple driven magnetic field to minimize stray fields around the receiver for inductive wireless power transmission type: conference user_id: '158' year: '2019' ... --- _id: '3588' abstract: - lang: eng text: 'In scientific computing, unstructured meshes are a crucial foundation for the simulation of real-world physical phenomena. Compared to regular grids, they allow resembling the computational domain with a much higher accuracy, which in turn leads to more efficient computations.
There exists a wealth of supporting libraries and frameworks that aid programmers with the implementation of applications working on such grids, each built on top of existing parallelization technologies. However, many approaches require the programmer to introduce a different programming paradigm into their application or provide different variants of the code. SYCL is a new programming standard providing a remedy to this dilemma by building on standard C ++17 with its so-called single-source approach: Programmers write standard C ++ code and expose parallelism using C++17 keywords. The application is
then transformed into a concrete implementation by the SYCL implementation. By encapsulating the OpenCL ecosystem, different SYCL implementations enable not only the programming of CPUs but also of heterogeneous platforms such as GPUs or other devices. For the first time, this paper showcases a SYCL-
based solver for the nodal Discontinuous Galerkin method for Maxwell’s equations on unstructured meshes. We compare our solution to a previous C-based implementation with respect to programmability and performance on heterogeneous platforms.Proceedings of the 29th Annual IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP). ; 2018:49-56. doi:10.1109/ASAP.2018.8445127' apa: 'Afzal, A., Schmitt, C., Alhaddad, S., Grynko, Y., Teich, J., Förstner, J., & Hannig, F. (2018). Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study. In Proceedings of the 29th Annual IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP) (pp. 49–56). https://doi.org/10.1109/ASAP.2018.8445127' bibtex: '@inproceedings{Afzal_Schmitt_Alhaddad_Grynko_Teich_Förstner_Hannig_2018, title={Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study}, DOI={10.1109/ASAP.2018.8445127}, booktitle={Proceedings of the 29th Annual IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP)}, author={Afzal, Ayesha and Schmitt, Christian and Alhaddad, Samer and Grynko, Yevgen and Teich, Jürgen and Förstner, Jens and Hannig, Frank}, year={2018}, pages={49–56} }' chicago: 'Afzal, Ayesha, Christian Schmitt, Samer Alhaddad, Yevgen Grynko, Jürgen Teich, Jens Förstner, and Frank Hannig. “Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study.” In Proceedings of the 29th Annual IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP), 49–56, 2018. https://doi.org/10.1109/ASAP.2018.8445127.' ieee: 'A. Afzal et al., “Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study,” in Proceedings of the 29th Annual IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP), 2018, pp. 49–56.' mla: 'Afzal, Ayesha, et al. “Solving Maxwell’s Equations with Modern C++ and SYCL: A Case Study.” Proceedings of the 29th Annual IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP), 2018, pp. 49–56, doi:10.1109/ASAP.2018.8445127.' short: 'A. Afzal, C. Schmitt, S. Alhaddad, Y. Grynko, J. Teich, J. Förstner, F. Hannig, in: Proceedings of the 29th Annual IEEE International Conference on Application-Specific Systems, Architectures and Processors (ASAP), 2018, pp. 49–56.' date_created: 2018-07-23T07:12:03Z date_updated: 2022-01-06T06:59:26Z ddc: - '004' department: - _id: '61' doi: 10.1109/ASAP.2018.8445127 file: - access_level: request content_type: application/pdf creator: fossie date_created: 2018-08-21T10:12:05Z date_updated: 2022-01-06T06:59:26Z embargo: 2019-09-03 embargo_to: open_access file_id: '3986' file_name: 2018-08 Afzal - ASAP Proceedings - Solving Maxwell equations with modern C++ and SYCL.pdf file_size: 252186 relation: main_file file_date_updated: 2022-01-06T06:59:26Z has_accepted_license: '1' keyword: - tet_topic_hpc language: - iso: eng page: 49-56 project: - _id: '33' grant_number: 01|H16005 name: HighPerMeshes - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Proceedings of the 29th Annual IEEE International Conference on Application-specific Systems, Architectures and Processors (ASAP) publication_identifier: isbn: - 978-1-5386-7479-6 status: public title: 'Solving Maxwell''s Equations with Modern C++ and SYCL: A Case Study' type: conference user_id: '158' year: '2018' ... --- _id: '3740' abstract: - lang: eng text: Oblique propagation of semi-guided waves across slab waveguide structures with bent corners is investigated. A critical angle can be defined beyond which all radiation losses are suppressed. Additionally an increase of the curvature radius of the bends also leads to low-loss configurations for incidence angles below that critical angle. A combination of two bent corner systems represents a step-like structure, behaving like a Fabry-Perot interferometer, with two partial reflectors separated by the vertical height between the horizontal slabs. We numerically analyse typical high-index-contrast Si/SiO2 structures for their reflectance and transmittance properties. When increasing the curvature radius the resonant effect becomes less relevant such that full transmittance is reached with less critical conditions on the vertical distance or the incidence angle. For practical interest 3-D problems are considered, where the structures are excited by the fundamental mode of a wide, shallow rib waveguide. High transmittance levels can be observed also for these 3-D configurations depending on the width of the rib. article_type: letter_note author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Ebers L, Hammer M, Förstner J. Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges. Optics Express. 2018;26(14):18621-18632. doi:10.1364/OE.26.018621' apa: 'Ebers, L., Hammer, M., & Förstner, J. (2018). Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges. Optics Express, 26(14), 18621–18632. https://doi.org/10.1364/OE.26.018621' bibtex: '@article{Ebers_Hammer_Förstner_2018, title={Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges}, volume={26}, DOI={10.1364/OE.26.018621}, number={14}, journal={Optics Express}, publisher={OSA Publishing}, author={Ebers, Lena and Hammer, Manfred and Förstner, Jens}, year={2018}, pages={18621–18632} }' chicago: 'Ebers, Lena, Manfred Hammer, and Jens Förstner. “Oblique Incidence of Semi-Guided Planar Waves on Slab Waveguide Steps: Effects of Rounded Edges.” Optics Express 26, no. 14 (2018): 18621–32. https://doi.org/10.1364/OE.26.018621.' ieee: 'L. Ebers, M. Hammer, and J. Förstner, “Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges,” Optics Express, vol. 26, no. 14, pp. 18621–18632, 2018.' mla: 'Ebers, Lena, et al. “Oblique Incidence of Semi-Guided Planar Waves on Slab Waveguide Steps: Effects of Rounded Edges.” Optics Express, vol. 26, no. 14, OSA Publishing, 2018, pp. 18621–32, doi:10.1364/OE.26.018621.' short: L. Ebers, M. Hammer, J. Förstner, Optics Express 26 (2018) 18621–18632. date_created: 2018-08-01T09:31:03Z date_updated: 2022-01-06T06:59:33Z ddc: - '620' department: - _id: '61' doi: 10.1364/OE.26.018621 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-01T09:30:58Z date_updated: 2018-08-01T09:30:58Z file_id: '3741' file_name: 2018-07 Ebers_Hammer_Förstner_OpticsExpress_Oblique incidence of semi guided planar waves on slab waveguide steps_Rounded Edges.pdf file_size: 6193865 relation: main_file file_date_updated: 2018-08-01T09:30:58Z has_accepted_license: '1' intvolume: ' 26' issue: '14' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: 18621-18632 project: - _id: '56' name: TRR 142 - Project Area C - _id: '53' name: TRR 142 - _id: '75' name: TRR 142 - Subproject C5 publication: Optics Express publication_status: published publisher: OSA Publishing status: public title: 'Oblique incidence of semi-guided planar waves on slab waveguide steps: effects of rounded edges' type: journal_article urn: '37409' user_id: '158' volume: 26 year: '2018' ... --- _id: '4579' abstract: - lang: eng text: Semi-guided waves confined in dielectric slab waveguides are being considered for oblique angles of propagation. If the waves encounter a linear discontinuity of (mostly) arbitrary shape and extension, a variant of Snell's law applies, separately for each pair of incoming and outgoing modes. Depending on the effective indices involved, and on the angle of incidence, power transfer to specific outgoing waves can be allowed or forbidden. In particular, critical angles of incidence can be identified, beyond which any power transfer to non-guided waves is forbidden, i.e. all radiative losses are suppressed. In that case the input power is carried away from the discontinuity exclusively by reflected semi-guided waves in the input slab, or by semi-guided waves that are transmitted into other outgoing slab waveguides. Vectorial equations on a 2-D cross sectional domain apply. These are formally identical to the equations that govern the eigenmodes of 3-D channel waveguides. Here, however, these need to be solved not as an eigenvalue problem, but as an inhomogeneous problem with a right-hand-side that is given by the incoming semi-guided wave, and subject to transparent boundary conditions. The equations resemble a standard 2-D Helmholtz problem, with an effective permittivity in place of the actual relative permittivity. Depending on the properties of the incoming wave, including the angle of incidence, this effective permittivity can become locally negative, causing the suppression of propagating outgoing waves. A series of high-contrast example configurations are discussed, where these effects lead to - in some respects - quite surprising transmission characteristics. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Hammer M, Ebers L, Hildebrandt A, Alhaddad S, Förstner J. Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity. In: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE; 2018. doi:10.1109/mmet.2018.8460455' apa: 'Hammer, M., Ebers, L., Hildebrandt, A., Alhaddad, S., & Förstner, J. (2018). Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity. In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE. https://doi.org/10.1109/mmet.2018.8460455' bibtex: '@inproceedings{Hammer_Ebers_Hildebrandt_Alhaddad_Förstner_2018, title={Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity}, DOI={10.1109/mmet.2018.8460455}, booktitle={2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)}, publisher={IEEE}, author={Hammer, Manfred and Ebers, Lena and Hildebrandt, Andre and Alhaddad, Samer and Förstner, Jens}, year={2018} }' chicago: 'Hammer, Manfred, Lena Ebers, Andre Hildebrandt, Samer Alhaddad, and Jens Förstner. “Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity.” In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE, 2018. https://doi.org/10.1109/mmet.2018.8460455.' ieee: 'M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, and J. Förstner, “Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity,” in 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), 2018.' mla: 'Hammer, Manfred, et al. “Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity.” 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), IEEE, 2018, doi:10.1109/mmet.2018.8460455.' short: 'M. Hammer, L. Ebers, A. Hildebrandt, S. Alhaddad, J. Förstner, in: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), IEEE, 2018.' date_created: 2018-10-02T17:11:59Z date_updated: 2022-01-06T07:01:13Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1109/mmet.2018.8460455 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2018-10-02T17:13:55Z date_updated: 2018-10-02T17:13:55Z file_id: '4580' file_name: 2018-09 Hammer - MMET (final draft).pdf file_size: 242956 relation: main_file success: 1 file_date_updated: 2018-10-02T17:13:55Z has_accepted_license: '1' keyword: - tet_topic_waveguides project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) publication_identifier: isbn: - '9781538654385' publication_status: published publisher: IEEE status: public title: 'Oblique Semi-Guided Waves: 2-D Integrated Photonics with Negative Effective Permittivity' type: conference user_id: '158' year: '2018' ... --- _id: '4581' author: - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Grynko Y, Förstner J. Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics. In: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE; 2018. doi:10.1109/mmet.2018.8460261' apa: Grynko, Y., & Förstner, J. (2018). Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics. In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE. https://doi.org/10.1109/mmet.2018.8460261 bibtex: '@inproceedings{Grynko_Förstner_2018, title={Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics}, DOI={10.1109/mmet.2018.8460261}, booktitle={2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET)}, publisher={IEEE}, author={Grynko, Yevgen and Förstner, Jens}, year={2018} }' chicago: Grynko, Yevgen, and Jens Förstner. “Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics.” In 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET). IEEE, 2018. https://doi.org/10.1109/mmet.2018.8460261. ieee: Y. Grynko and J. Förstner, “Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics,” in 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), 2018. mla: Grynko, Yevgen, and Jens Förstner. “Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics.” 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), IEEE, 2018, doi:10.1109/mmet.2018.8460261. short: 'Y. Grynko, J. Förstner, in: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET), IEEE, 2018.' date_created: 2018-10-04T22:21:39Z date_updated: 2022-01-06T07:01:14Z ddc: - '530' department: - _id: '61' doi: 10.1109/mmet.2018.8460261 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2018-10-04T22:25:59Z date_updated: 2018-10-04T22:25:59Z file_id: '4582' file_name: 2018-09 Grynko - MMET (preprint).pdf file_size: 1131678 relation: main_file success: 1 file_date_updated: 2018-10-04T22:25:59Z has_accepted_license: '1' keyword: - tet_topic_numerics - tet_topic_shg language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: 2018 IEEE 17th International Conference on Mathematical Methods in Electromagnetic Theory (MMET) publication_identifier: isbn: - '9781538654385' publication_status: published publisher: IEEE status: public title: Application of the Discontinuous Galerkin Time Domain Method in Nonlinear Nanoplasmonics type: conference user_id: '158' year: '2018' ... --- _id: '4831' abstract: - lang: eng text: Polarization of light is essential for some living organisms and many optical applications. Here, an orientation dependent polarization conversion effect is reported for light reflected from diamond‐structure‐based photonic crystals (D‐structure) inside the scales of a beetle, the weevil Entimus imperialis. When linearly polarized light propagates along its 〈100〉 directions, the D‐structure behaves analogous to a half‐wave plate in reflection but based on a different mechanism. The D‐structure rotates the polarization direction of linearly polarized light, and reflects circularly polarized light of both handednesses without changing it. This polarization effect is different from circular dichroism occurring in chiral biological photonic structures discovered before. The structural origin of this effect is symmetry breaking inside D‐structure's unit cell. This finding demonstrates that natural photonic structures can exploit multiple functionalities inherent to the design principles of their structural organization. Aiming at transferring the inherent polarization effect of the biological D‐structure to technically realizable materials, three simplified biomimetic structural models are derived and it is theoretically demonstrated that they retain the effect. Out of these structures, functioning woodpile structure prototypes are fabricated. author: - first_name: Xia full_name: Wu, Xia last_name: Wu - first_name: Fernando L. full_name: Rodríguez-Gallegos, Fernando L. last_name: Rodríguez-Gallegos - first_name: Marie-Christin full_name: Heep, Marie-Christin last_name: Heep - first_name: Bertram full_name: Schwind, Bertram last_name: Schwind - first_name: Guixin full_name: Li, Guixin last_name: Li - first_name: Helge-Otto full_name: Fabritius, Helge-Otto last_name: Fabritius - first_name: Georg full_name: von Freymann, Georg last_name: von Freymann - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Wu X, Rodríguez-Gallegos FL, Heep M-C, et al. Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures. Advanced Optical Materials. 2018;6(24):1800635. doi:10.1002/adom.201800635 apa: Wu, X., Rodríguez-Gallegos, F. L., Heep, M.-C., Schwind, B., Li, G., Fabritius, H.-O., … Förstner, J. (2018). Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures. Advanced Optical Materials, 6(24), 1800635. https://doi.org/10.1002/adom.201800635 bibtex: '@article{Wu_Rodríguez-Gallegos_Heep_Schwind_Li_Fabritius_von Freymann_Förstner_2018, title={Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures}, volume={6}, DOI={10.1002/adom.201800635}, number={24}, journal={Advanced Optical Materials}, publisher={Wiley}, author={Wu, Xia and Rodríguez-Gallegos, Fernando L. and Heep, Marie-Christin and Schwind, Bertram and Li, Guixin and Fabritius, Helge-Otto and von Freymann, Georg and Förstner, Jens}, year={2018}, pages={1800635} }' chicago: 'Wu, Xia, Fernando L. Rodríguez-Gallegos, Marie-Christin Heep, Bertram Schwind, Guixin Li, Helge-Otto Fabritius, Georg von Freymann, and Jens Förstner. “Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures.” Advanced Optical Materials 6, no. 24 (2018): 1800635. https://doi.org/10.1002/adom.201800635.' ieee: X. Wu et al., “Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures,” Advanced Optical Materials, vol. 6, no. 24, p. 1800635, 2018. mla: Wu, Xia, et al. “Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures.” Advanced Optical Materials, vol. 6, no. 24, Wiley, 2018, p. 1800635, doi:10.1002/adom.201800635. short: X. Wu, F.L. Rodríguez-Gallegos, M.-C. Heep, B. Schwind, G. Li, H.-O. Fabritius, G. von Freymann, J. Förstner, Advanced Optical Materials 6 (2018) 1800635. date_created: 2018-10-24T11:50:29Z date_updated: 2022-01-06T07:01:26Z ddc: - '530' department: - _id: '61' doi: 10.1002/adom.201800635 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2018-10-24T11:55:33Z date_updated: 2018-10-24T11:55:33Z file_id: '4832' file_name: 2018-10 Xia Wu - Advanced Optical Materials - Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures.pdf file_size: 4191754 relation: main_file success: 1 file_date_updated: 2018-10-24T11:55:33Z has_accepted_license: '1' intvolume: ' 6' issue: '24' keyword: - tet_topic_phc - tet_topic_bio language: - iso: eng page: '1800635' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 publication: Advanced Optical Materials publication_identifier: issn: - 2195-1071 publication_status: published publisher: Wiley status: public title: Polarization Conversion Effect in Biological and Synthetic Photonic Diamond Structures type: journal_article user_id: '158' volume: 6 year: '2018' ... --- _id: '4165' abstract: - lang: eng text: Metal nanoparticles host localized plasmon excitations that allow the manipulation of optical fields at the nanoscale. Despite the availability of several techniques for imaging plasmons, direct access into the symmetries of these excitations remains elusive, thus hindering progress in the development of applications. Here, we present a combination of angle-, polarization-, and space-resolved cathodoluminescence spectroscopy methods to selectively access the symmetry and degeneracy of plasmonic states in lithographically fabricated gold nanoprisms. We experimentally reveal and spatially map degenerate states of multipole plasmon modes with nanometer spatial resolution and further provide recipes for resolving optically dark and out-of-plane modes. Full-wave simulations in conjunction with a simple tight-binding model explain the complex plasmon structure in these particles and reveal intriguing mode-symmetry phenomena. Our approach introduces systematics for a comprehensive symmetry characterization of plasmonic states in high-symmetry nanostructures. article_type: original author: - first_name: Viktor full_name: Myroshnychenko, Viktor id: '46371' last_name: Myroshnychenko - first_name: Natsuki full_name: Nishio, Natsuki last_name: Nishio - first_name: F. Javier full_name: García de Abajo, F. Javier last_name: García de Abajo - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Naoki full_name: Yamamoto, Naoki last_name: Yamamoto citation: ama: Myroshnychenko V, Nishio N, García de Abajo FJ, Förstner J, Yamamoto N. Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution. ACS Nano. 2018;12(8):8436-8446. doi:10.1021/acsnano.8b03926 apa: Myroshnychenko, V., Nishio, N., García de Abajo, F. J., Förstner, J., & Yamamoto, N. (2018). Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution. ACS Nano, 12(8), 8436–8446. https://doi.org/10.1021/acsnano.8b03926 bibtex: '@article{Myroshnychenko_Nishio_García de Abajo_Förstner_Yamamoto_2018, title={Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution}, volume={12}, DOI={10.1021/acsnano.8b03926}, number={8}, journal={ACS Nano}, publisher={American Chemical Society (ACS)}, author={Myroshnychenko, Viktor and Nishio, Natsuki and García de Abajo, F. Javier and Förstner, Jens and Yamamoto, Naoki}, year={2018}, pages={8436–8446} }' chicago: 'Myroshnychenko, Viktor, Natsuki Nishio, F. Javier García de Abajo, Jens Förstner, and Naoki Yamamoto. “Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.” ACS Nano 12, no. 8 (2018): 8436–46. https://doi.org/10.1021/acsnano.8b03926.' ieee: V. Myroshnychenko, N. Nishio, F. J. García de Abajo, J. Förstner, and N. Yamamoto, “Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution,” ACS Nano, vol. 12, no. 8, pp. 8436–8446, 2018. mla: Myroshnychenko, Viktor, et al. “Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.” ACS Nano, vol. 12, no. 8, American Chemical Society (ACS), 2018, pp. 8436–46, doi:10.1021/acsnano.8b03926. short: V. Myroshnychenko, N. Nishio, F.J. García de Abajo, J. Förstner, N. Yamamoto, ACS Nano 12 (2018) 8436–8446. date_created: 2018-08-28T07:44:24Z date_updated: 2022-01-06T07:00:27Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1021/acsnano.8b03926 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-28T07:45:47Z date_updated: 2018-09-03T13:54:21Z file_id: '4166' file_name: 2018 Myroshnychenko,Nishio,Garcia de Abajo,Förstner,Yamamoto_Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution.pdf file_size: 4463352 relation: main_file file_date_updated: 2018-09-03T13:54:21Z has_accepted_license: '1' intvolume: ' 12' issue: '8' keyword: - tet_topic_plasmonics language: - iso: eng oa: '1' page: 8436-8446 project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '75' name: TRR 142 - Subproject C5 publication: ACS Nano publication_identifier: issn: - 1936-0851 - 1936-086X publication_status: published publisher: American Chemical Society (ACS) status: public title: Unveiling and Imaging Degenerate States in Plasmonic Nanoparticles with Nanometer Resolution type: journal_article urn: '41659' user_id: '158' volume: 12 year: '2018' ... --- _id: '4324' abstract: - lang: eng text: "We study the dependence of the intensity and linear polarization of light scattered by isolated particles with the compact\r\nirregular shape on their size using the discontinuous Galerkin time domain numerical method. The size parameter of particles varies in the range of X = 10 to 150, and the complex refractive index is m = 1.5 + 0i. Our results show\r\nthat the backscattering negative polarization branch weakens monotonously, but does not disappear at large sizes, up to the geometrical optics regime, and can be simulated without accounting for wave effects. The intensity backscattering surge becomes narrower with increasing particle size. For X = 150, the surge width is several degrees." article_type: original author: - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Yuriy full_name: Shkuratov, Yuriy last_name: Shkuratov - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Grynko Y, Shkuratov Y, Förstner J. Intensity surge and negative polarization of light from compact irregular particles. Optics Letters. 2018;43(15):3562. doi:10.1364/ol.43.003562 apa: Grynko, Y., Shkuratov, Y., & Förstner, J. (2018). Intensity surge and negative polarization of light from compact irregular particles. Optics Letters, 43(15), 3562. https://doi.org/10.1364/ol.43.003562 bibtex: '@article{Grynko_Shkuratov_Förstner_2018, title={Intensity surge and negative polarization of light from compact irregular particles}, volume={43}, DOI={10.1364/ol.43.003562}, number={15}, journal={Optics Letters}, publisher={The Optical Society}, author={Grynko, Yevgen and Shkuratov, Yuriy and Förstner, Jens}, year={2018}, pages={3562} }' chicago: 'Grynko, Yevgen, Yuriy Shkuratov, and Jens Förstner. “Intensity Surge and Negative Polarization of Light from Compact Irregular Particles.” Optics Letters 43, no. 15 (2018): 3562. https://doi.org/10.1364/ol.43.003562.' ieee: Y. Grynko, Y. Shkuratov, and J. Förstner, “Intensity surge and negative polarization of light from compact irregular particles,” Optics Letters, vol. 43, no. 15, p. 3562, 2018. mla: Grynko, Yevgen, et al. “Intensity Surge and Negative Polarization of Light from Compact Irregular Particles.” Optics Letters, vol. 43, no. 15, The Optical Society, 2018, p. 3562, doi:10.1364/ol.43.003562. short: Y. Grynko, Y. Shkuratov, J. Förstner, Optics Letters 43 (2018) 3562. date_created: 2018-08-30T10:17:08Z date_updated: 2022-01-06T07:00:55Z ddc: - '530' department: - _id: '61' doi: 10.1364/ol.43.003562 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-30T10:18:10Z date_updated: 2021-07-27T21:04:54Z file_id: '4325' file_name: 2018-07 Grynko,Shkuratov,Förstner_Intensity surge and negative polarization of light from compact irregular particles.pdf file_size: 1797893 relation: main_file file_date_updated: 2021-07-27T21:04:54Z has_accepted_license: '1' intvolume: ' 43' issue: '15' keyword: - tet_topic_scattering language: - iso: eng oa: '1' page: '3562' publication: Optics Letters publication_identifier: issn: - 0146-9592 - 1539-4794 publication_status: published publisher: The Optical Society status: public title: Intensity surge and negative polarization of light from compact irregular particles type: journal_article user_id: '158' volume: 43 year: '2018' ... --- _id: '5469' abstract: - lang: ger text: In diesem Beitrag werden simulatorische und messtechnische EMV-Untersuchungen von Gleichspannungswandlern vorgestellt. Der Fokus liegt auf leitungsgeführten Störspannungen, ihre Abhängigkeit vom Schaltungslayout und ihre Unterdrückung durch Filterung. Der Simulationsprozess besteht aus kombinierten Feld- und Netzwerksimulationen. Zur Bewertung der Simulationsresultate werden zwei Prototypen gezeigt, die gute und schlechte EMV-Eigenschaften aufweisen. Bei der Beurteilung der Resultate wird insbesondere Wert auf die Untersuchung gelegt, inwieweit einfache Schaltungssimulationen ausreichen, um leitungsgeführte Störspannungen korrekt vorherzusagen und wann aufwändigere Feldsimulationen notwendig sind. author: - first_name: Tim full_name: Baumgarten, Tim last_name: Baumgarten - first_name: Peter full_name: Scholz, Peter last_name: Scholz - first_name: Denis full_name: Sievers, Denis last_name: Sievers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Baumgarten T, Scholz P, Sievers D, Förstner J. Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern. In: Garbe H, ed. Elektromagnetische Verträglichkeit - Internationale Fachmesse Und Kongress 2018. ; 2018:47.' apa: Baumgarten, T., Scholz, P., Sievers, D., & Förstner, J. (2018). Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern. In H. Garbe (Ed.), Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress 2018 (p. 47). Düsseldorf. bibtex: '@inproceedings{Baumgarten_Scholz_Sievers_Förstner_2018, title={Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern}, booktitle={Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress 2018}, author={Baumgarten, Tim and Scholz, Peter and Sievers, Denis and Förstner, Jens}, editor={Garbe, HeynoEditor}, year={2018}, pages={47} }' chicago: Baumgarten, Tim, Peter Scholz, Denis Sievers, and Jens Förstner. “Simulation Leitungsgeführter Störspannungen von DC-DC-Wandlern.” In Elektromagnetische Verträglichkeit - Internationale Fachmesse Und Kongress 2018, edited by Heyno Garbe, 47, 2018. ieee: T. Baumgarten, P. Scholz, D. Sievers, and J. Förstner, “Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern,” in Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress 2018, Düsseldorf, 2018, p. 47. mla: Baumgarten, Tim, et al. “Simulation Leitungsgeführter Störspannungen von DC-DC-Wandlern.” Elektromagnetische Verträglichkeit - Internationale Fachmesse Und Kongress 2018, edited by Heyno Garbe, 2018, p. 47. short: 'T. Baumgarten, P. Scholz, D. Sievers, J. Förstner, in: H. Garbe (Ed.), Elektromagnetische Verträglichkeit - Internationale Fachmesse Und Kongress 2018, 2018, p. 47.' conference: location: Düsseldorf name: emv Internationale Fachmesse und Kongress 2018 date_created: 2018-11-08T23:44:10Z date_updated: 2022-01-06T07:01:55Z department: - _id: '61' editor: - first_name: Heyno full_name: Garbe, Heyno last_name: Garbe language: - iso: eng page: '47' publication: Elektromagnetische Verträglichkeit - Internationale Fachmesse und Kongress 2018 publication_identifier: isbn: - 978-3-95735-077-0 status: public title: Simulation leitungsgeführter Störspannungen von DC-DC-Wandlern type: conference user_id: '158' year: '2018' ... --- _id: '1430' author: - first_name: Sandro P. full_name: Hoffmann, Sandro P. last_name: Hoffmann - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Nils full_name: Weber, Nils last_name: Weber - first_name: Denis full_name: Sievers, Denis last_name: Sievers - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Thomas full_name: Zentgraf, Thomas id: '30525' last_name: Zentgraf orcid: 0000-0002-8662-1101 - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 citation: ama: Hoffmann SP, Albert M, Weber N, et al. Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities. ACS Photonics. 2018;5:1933-1942. doi:10.1021/acsphotonics.7b01228 apa: Hoffmann, S. P., Albert, M., Weber, N., Sievers, D., Förstner, J., Zentgraf, T., & Meier, C. (2018). Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities. ACS Photonics, 5, 1933–1942. https://doi.org/10.1021/acsphotonics.7b01228 bibtex: '@article{Hoffmann_Albert_Weber_Sievers_Förstner_Zentgraf_Meier_2018, title={Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities}, volume={5}, DOI={10.1021/acsphotonics.7b01228}, journal={ACS Photonics}, publisher={American Chemical Society (ACS)}, author={Hoffmann, Sandro P. and Albert, Maximilian and Weber, Nils and Sievers, Denis and Förstner, Jens and Zentgraf, Thomas and Meier, Cedrik}, year={2018}, pages={1933–1942} }' chicago: 'Hoffmann, Sandro P., Maximilian Albert, Nils Weber, Denis Sievers, Jens Förstner, Thomas Zentgraf, and Cedrik Meier. “Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities.” ACS Photonics 5 (2018): 1933–42. https://doi.org/10.1021/acsphotonics.7b01228.' ieee: S. P. Hoffmann et al., “Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities,” ACS Photonics, vol. 5, pp. 1933–1942, 2018. mla: Hoffmann, Sandro P., et al. “Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities.” ACS Photonics, vol. 5, American Chemical Society (ACS), 2018, pp. 1933–42, doi:10.1021/acsphotonics.7b01228. short: S.P. Hoffmann, M. Albert, N. Weber, D. Sievers, J. Förstner, T. Zentgraf, C. Meier, ACS Photonics 5 (2018) 1933–1942. date_created: 2018-03-20T07:39:36Z date_updated: 2022-01-06T06:51:58Z ddc: - '530' department: - _id: '15' - _id: '230' - _id: '61' - _id: '287' - _id: '35' - _id: '289' doi: 10.1021/acsphotonics.7b01228 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2018-08-16T07:49:44Z date_updated: 2018-08-21T10:38:31Z file_id: '3915' file_name: 2018-03 Hoffmann ACS Photonics - Tailored UV Emission by nonlinear IR excitation from ZnO photonic crystal nanocavities.pdf file_size: 2935858 relation: main_file file_date_updated: 2018-08-21T10:38:31Z has_accepted_license: '1' intvolume: ' 5' keyword: - tet_topic_phc language: - iso: eng oa: '1' page: 1933-1942 project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '55' name: TRR 142 - Project Area B - _id: '62' name: TRR 142 - Subproject A5 - _id: '66' name: TRR 142 - Subproject B1 publication: ACS Photonics publication_identifier: issn: - 2330-4022 - 2330-4022 publication_status: published publisher: American Chemical Society (ACS) status: public title: Tailored UV Emission by Nonlinear IR Excitation from ZnO Photonic Crystal Nanocavities type: journal_article urn: '14308' user_id: '30525' volume: 5 year: '2018' ... --- _id: '3427' abstract: - lang: eng text: "We report on the coherent phase manipulation of quantum dot excitons by electric means. For our\r\nexperiments, we use a low capacitance single quantum dot photodiode which is electrically\r\ncontrolled by a custom designed SiGe:C BiCMOS chip. The phase manipulation is performed and\r\nquantified in a Ramsey experiment, where ultrafast transient detuning of the exciton energy is\r\nperformed synchronous to double pulse p/2 ps laser excitation. We are able to demonstrate\r\nelectrically controlled phase manipulations with magnitudes up to 3p within 100 ps which is below\r\nthe dephasing time of the quantum dot exciton." article_type: original author: - first_name: Alex full_name: Widhalm, Alex last_name: Widhalm - first_name: Amlan full_name: Mukherjee, Amlan last_name: Mukherjee - first_name: Sebastian full_name: Krehs, Sebastian last_name: Krehs - first_name: Nandlal full_name: Sharma, Nandlal last_name: Sharma - first_name: Peter full_name: Kölling, Peter last_name: Kölling - first_name: Andreas full_name: Thiede, Andreas id: '538' last_name: Thiede - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Widhalm A, Mukherjee A, Krehs S, et al. Ultrafast electric phase control of a single exciton qubit. Applied Physics Letters. 2018;112(11):111105. doi:10.1063/1.5020364 apa: Widhalm, A., Mukherjee, A., Krehs, S., Sharma, N., Kölling, P., Thiede, A., Reuter, D., Förstner, J., & Zrenner, A. (2018). Ultrafast electric phase control of a single exciton qubit. Applied Physics Letters, 112(11), 111105. https://doi.org/10.1063/1.5020364 bibtex: '@article{Widhalm_Mukherjee_Krehs_Sharma_Kölling_Thiede_Reuter_Förstner_Zrenner_2018, title={Ultrafast electric phase control of a single exciton qubit}, volume={112}, DOI={10.1063/1.5020364}, number={11}, journal={Applied Physics Letters}, author={Widhalm, Alex and Mukherjee, Amlan and Krehs, Sebastian and Sharma, Nandlal and Kölling, Peter and Thiede, Andreas and Reuter, Dirk and Förstner, Jens and Zrenner, Artur}, year={2018}, pages={111105} }' chicago: 'Widhalm, Alex, Amlan Mukherjee, Sebastian Krehs, Nandlal Sharma, Peter Kölling, Andreas Thiede, Dirk Reuter, Jens Förstner, and Artur Zrenner. “Ultrafast Electric Phase Control of a Single Exciton Qubit.” Applied Physics Letters 112, no. 11 (2018): 111105. https://doi.org/10.1063/1.5020364.' ieee: 'A. Widhalm et al., “Ultrafast electric phase control of a single exciton qubit,” Applied Physics Letters, vol. 112, no. 11, p. 111105, 2018, doi: 10.1063/1.5020364.' mla: Widhalm, Alex, et al. “Ultrafast Electric Phase Control of a Single Exciton Qubit.” Applied Physics Letters, vol. 112, no. 11, 2018, p. 111105, doi:10.1063/1.5020364. short: A. Widhalm, A. Mukherjee, S. Krehs, N. Sharma, P. Kölling, A. Thiede, D. Reuter, J. Förstner, A. Zrenner, Applied Physics Letters 112 (2018) 111105. date_created: 2018-07-05T09:47:26Z date_updated: 2023-01-24T11:00:08Z ddc: - '530' department: - _id: '15' - _id: '230' - _id: '61' - _id: '51' doi: 10.1063/1.5020364 file: - access_level: request content_type: application/pdf creator: fossie date_created: 2018-08-16T07:42:38Z date_updated: 2022-01-06T06:59:16Z embargo: 2019-03-01 embargo_to: open_access file_id: '3914' file_name: 2018-03 Widhalm APL Ultrafast electric phase control of a single exciton qubit.pdf file_size: 923692 relation: main_file file_date_updated: 2022-01-06T06:59:16Z has_accepted_license: '1' intvolume: ' 112' issue: '11' keyword: - tet_topic_qd language: - iso: eng page: '111105' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C - _id: '74' name: TRR 142 - Subproject C4 publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 publication_status: published status: public title: Ultrafast electric phase control of a single exciton qubit type: journal_article user_id: '158' volume: 112 year: '2018' ... --- _id: '1588' abstract: - lang: eng text: The exploration of FPGAs as accelerators for scientific simulations has so far mostly been focused on small kernels of methods working on regular data structures, for example in the form of stencil computations for finite difference methods. In computational sciences, often more advanced methods are employed that promise better stability, convergence, locality and scaling. Unstructured meshes are shown to be more effective and more accurate, compared to regular grids, in representing computation domains of various shapes. Using unstructured meshes, the discontinuous Galerkin method preserves the ability to perform explicit local update operations for simulations in the time domain. In this work, we investigate FPGAs as target platform for an implementation of the nodal discontinuous Galerkin method to find time-domain solutions of Maxwell's equations in an unstructured mesh. When maximizing data reuse and fitting constant coefficients into suitably partitioned on-chip memory, high computational intensity allows us to implement and feed wide data paths with hundreds of floating point operators. By decoupling off-chip memory accesses from the computations, high memory bandwidth can be sustained, even for the irregular access pattern required by parts of the application. Using the Intel/Altera OpenCL SDK for FPGAs, we present different implementation variants for different polynomial orders of the method. In different phases of the algorithm, either computational or bandwidth limits of the Arria 10 platform are almost reached, thus outperforming a highly multithreaded CPU implementation by around 2x. author: - first_name: Tobias full_name: Kenter, Tobias id: '3145' last_name: Kenter - first_name: Gopinath full_name: Mahale, Gopinath last_name: Mahale - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Christian full_name: Schmitt, Christian last_name: Schmitt - first_name: Ayesha full_name: Afzal, Ayesha last_name: Afzal - first_name: Frank full_name: Hannig, Frank last_name: Hannig - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Christian full_name: Plessl, Christian id: '16153' last_name: Plessl orcid: 0000-0001-5728-9982 citation: ama: 'Kenter T, Mahale G, Alhaddad S, et al. OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes. In: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM). IEEE; 2018. doi:10.1109/FCCM.2018.00037' apa: Kenter, T., Mahale, G., Alhaddad, S., Grynko, Y., Schmitt, C., Afzal, A., Hannig, F., Förstner, J., & Plessl, C. (2018). OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes. Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM). Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM). https://doi.org/10.1109/FCCM.2018.00037 bibtex: '@inproceedings{Kenter_Mahale_Alhaddad_Grynko_Schmitt_Afzal_Hannig_Förstner_Plessl_2018, title={OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes}, DOI={10.1109/FCCM.2018.00037}, booktitle={Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM)}, publisher={IEEE}, author={Kenter, Tobias and Mahale, Gopinath and Alhaddad, Samer and Grynko, Yevgen and Schmitt, Christian and Afzal, Ayesha and Hannig, Frank and Förstner, Jens and Plessl, Christian}, year={2018} }' chicago: Kenter, Tobias, Gopinath Mahale, Samer Alhaddad, Yevgen Grynko, Christian Schmitt, Ayesha Afzal, Frank Hannig, Jens Förstner, and Christian Plessl. “OpenCL-Based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes.” In Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM). IEEE, 2018. https://doi.org/10.1109/FCCM.2018.00037. ieee: 'T. Kenter et al., “OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes,” presented at the Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM), 2018, doi: 10.1109/FCCM.2018.00037.' mla: Kenter, Tobias, et al. “OpenCL-Based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes.” Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM), IEEE, 2018, doi:10.1109/FCCM.2018.00037. short: 'T. Kenter, G. Mahale, S. Alhaddad, Y. Grynko, C. Schmitt, A. Afzal, F. Hannig, J. Förstner, C. Plessl, in: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM), IEEE, 2018.' conference: name: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM) date_created: 2018-03-22T10:48:01Z date_updated: 2023-09-26T11:47:52Z ddc: - '000' department: - _id: '27' - _id: '518' - _id: '61' doi: 10.1109/FCCM.2018.00037 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:45:05Z date_updated: 2018-11-02T14:45:05Z file_id: '5282' file_name: 08457652.pdf file_size: 269130 relation: main_file success: 1 file_date_updated: 2018-11-02T14:45:05Z has_accepted_license: '1' keyword: - tet_topic_hpc language: - iso: eng project: - _id: '33' grant_number: 01|H16005A name: HighPerMeshes - _id: '1' grant_number: '160364472' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '14' grant_number: '160364472' name: SFB 901 - Subproject C2 publication: Proc. Int. Symp. on Field-Programmable Custom Computing Machines (FCCM) publisher: IEEE quality_controlled: '1' status: public title: OpenCL-based FPGA Design to Accelerate the Nodal Discontinuous Galerkin Method for Unstructured Meshes type: conference user_id: '15278' year: '2018' ... --- _id: '3523' abstract: - lang: eng text: We numerically simulate the circular polarization ratio of the radar signal backscattered from a large-grain cometary coma and compare the simulation results with the radar measurements for seven comets. We apply the discrete dipole approximation method and a model of random irregular particles. Our results confirm water ice composition of the cm-sized chunks detected by the NASA Deep Impact space probe in the vicinity of the nucleus of Comet 103P/Hartley 2. The index of the power-law size distribution in this case can be constrained to the range n ≈ 3.3–4.3. For the other considered comets the circular polarization ratio can be reproduced with variations of the power index between 2 and 5. article_type: original author: - first_name: Shraddha full_name: Dogra, Shraddha last_name: Dogra - first_name: Yevgen full_name: Grynko, Yevgen id: '26059' last_name: Grynko - first_name: Evgenij full_name: Zubko, Evgenij last_name: Zubko - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Dogra S, Grynko Y, Zubko E, Förstner J. Radar backscattering from a large-grain cometary coma: numerical simulation. Astronomy & Astrophysics. 2017;608:A20. doi:10.1051/0004-6361/201730801' apa: 'Dogra, S., Grynko, Y., Zubko, E., & Förstner, J. (2017). Radar backscattering from a large-grain cometary coma: numerical simulation. Astronomy & Astrophysics, 608, A20. https://doi.org/10.1051/0004-6361/201730801' bibtex: '@article{Dogra_Grynko_Zubko_Förstner_2017, title={Radar backscattering from a large-grain cometary coma: numerical simulation}, volume={608}, DOI={10.1051/0004-6361/201730801}, journal={Astronomy & Astrophysics}, publisher={EDP Sciences}, author={Dogra, Shraddha and Grynko, Yevgen and Zubko, Evgenij and Förstner, Jens}, year={2017}, pages={A20} }' chicago: 'Dogra, Shraddha, Yevgen Grynko, Evgenij Zubko, and Jens Förstner. “Radar Backscattering from a Large-Grain Cometary Coma: Numerical Simulation.” Astronomy & Astrophysics 608 (2017): A20. https://doi.org/10.1051/0004-6361/201730801.' ieee: 'S. Dogra, Y. Grynko, E. Zubko, and J. Förstner, “Radar backscattering from a large-grain cometary coma: numerical simulation,” Astronomy & Astrophysics, vol. 608, p. A20, 2017.' mla: 'Dogra, Shraddha, et al. “Radar Backscattering from a Large-Grain Cometary Coma: Numerical Simulation.” Astronomy & Astrophysics, vol. 608, EDP Sciences, 2017, p. A20, doi:10.1051/0004-6361/201730801.' short: S. Dogra, Y. Grynko, E. Zubko, J. Förstner, Astronomy & Astrophysics 608 (2017) A20. date_created: 2018-07-10T10:19:01Z date_updated: 2022-01-06T06:59:21Z ddc: - '530' department: - _id: '61' doi: 10.1051/0004-6361/201730801 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-14T10:17:27Z date_updated: 2018-09-03T14:05:33Z file_id: '3903' file_name: 2017-10 Dogra,Grynko,Zubko,Förstner_Radar backscattering from large scale cometary coma-Numerical simulation_Astronomy and Astrophysics.pdf file_size: 1206283 relation: main_file file_date_updated: 2018-09-03T14:05:33Z has_accepted_license: '1' intvolume: ' 608' keyword: - tet_topic_scattering language: - iso: eng oa: '1' page: A20 publication: Astronomy & Astrophysics publication_identifier: issn: - 0004-6361 - 1432-0746 publication_status: published publisher: EDP Sciences status: public title: 'Radar backscattering from a large-grain cometary coma: numerical simulation' type: journal_article urn: '35230' user_id: '158' volume: 608 year: '2017' ... --- _id: '3743' abstract: - lang: eng text: Frequently, optical integrated circuits combine elements (waveguide channels, cavities), the simulation of which is well established through mature numerical eigenproblem solvers. It remains to predict the interaction of these modes. We address this task by a general, “Hybrid” variant (HCMT) of Coupled Mode Theory. Using methods from finite-element numerics, the properties of a circuit are approximated by superpositions of eigen-solutions for its constituents, leading to quantitative, computationally cheap, and easily interpretable models. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: 'Hammer M. Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory. In: Agrawal A, ed. Recent Trends in Computational Photonics. Vol 204. 204th ed. Springer Series in Optical Sciences book series. Springer; 2017:77-105.' apa: Hammer, M. (2017). Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory. In A. Agrawal (Ed.), Recent Trends in Computational Photonics (204th ed., Vol. 204, pp. 77–105). Springer. bibtex: '@inbook{Hammer_2017, edition={204}, series={ Springer Series in Optical Sciences book series}, title={Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory}, volume={204}, booktitle={Recent Trends in Computational Photonics}, publisher={Springer}, author={Hammer, Manfred}, editor={Agrawal, ArtiEditor}, year={2017}, pages={77–105}, collection={ Springer Series in Optical Sciences book series} }' chicago: Hammer, Manfred. “Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory.” In Recent Trends in Computational Photonics, edited by Arti Agrawal, 204th ed., 204:77–105. Springer Series in Optical Sciences Book Series. Springer, 2017. ieee: M. Hammer, “Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory,” in Recent Trends in Computational Photonics, 204th ed., vol. 204, A. Agrawal, Ed. Springer, 2017, pp. 77–105. mla: Hammer, Manfred. “Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory.” Recent Trends in Computational Photonics, edited by Arti Agrawal, 204th ed., vol. 204, Springer, 2017, pp. 77–105. short: 'M. Hammer, in: A. Agrawal (Ed.), Recent Trends in Computational Photonics, 204th ed., Springer, 2017, pp. 77–105.' date_created: 2018-08-01T10:44:00Z date_updated: 2022-01-06T06:59:34Z department: - _id: '61' edition: '204' editor: - first_name: Arti full_name: Agrawal, Arti last_name: Agrawal intvolume: ' 204' keyword: - tet_topic_waveguide - tet_topic_numerics language: - iso: eng page: 77-105 publication: Recent Trends in Computational Photonics publication_identifier: isbn: - 978-3-319-55438-9 publication_status: published publisher: Springer series_title: ' Springer Series in Optical Sciences book series' status: public title: Guided Wave Interaction in Photonic Integrated Circuits — A Hybrid Analytical/Numerical Approach to Coupled Mode Theory type: book_chapter user_id: '55706' volume: 204 year: '2017' ... --- _id: '3828' abstract: - lang: eng text: "The 3D implementation of a hybrid analytical/numerical variant of the coupled-mode theory is discussed.\r\nEigenmodes of the constituting dielectric channels are computed numerically. The frequency-domain\r\ncoupled-mode models then combine these into fully vectorial approximations for the optical electromagnetic\r\nfields of the composite structure. Following a discretization of amplitude functions by 1D finite elements, pro-\r\ncedures from the realm of finite-element numerics are applied to establish systems of linear equations for the then-\r\ndiscrete modal amplitudes. Examples substantiate the functioning of the technique and allow for some numerical\r\nassessment. The full 3D simulations are highly efficient in memory consumption, moderately demanding in com-\r\nputational time, and, in regimes of low radiative losses, sufficiently accurate for practical design. Our results\r\ninclude the perturbation of guided modes by changes of the refractive indices, the interaction of waves in parallel,\r\nhorizontally or vertically coupled straight waveguides, and a series of crossings of potentially overlapping channels\r\nwith fairly arbitrary relative positions and orientations." article_type: original author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Samer full_name: Alhaddad, Samer last_name: Alhaddad - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: 'Hammer M, Alhaddad S, Förstner J. Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings. Journal of the Optical Society of America B. 2017;34(3):613-624. doi:10.1364/josab.34.000613' apa: 'Hammer, M., Alhaddad, S., & Förstner, J. (2017). Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings. Journal of the Optical Society of America B, 34(3), 613–624. https://doi.org/10.1364/josab.34.000613' bibtex: '@article{Hammer_Alhaddad_Förstner_2017, title={Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings}, volume={34}, DOI={10.1364/josab.34.000613}, number={3}, journal={Journal of the Optical Society of America B}, publisher={The Optical Society}, author={Hammer, Manfred and Alhaddad, Samer and Förstner, Jens}, year={2017}, pages={613–624} }' chicago: 'Hammer, Manfred, Samer Alhaddad, and Jens Förstner. “Hybrid Coupled-Mode Modeling in 3D: Perturbed and Coupled Channels, and Waveguide Crossings.” Journal of the Optical Society of America B 34, no. 3 (2017): 613–24. https://doi.org/10.1364/josab.34.000613.' ieee: 'M. Hammer, S. Alhaddad, and J. Förstner, “Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings,” Journal of the Optical Society of America B, vol. 34, no. 3, pp. 613–624, 2017.' mla: 'Hammer, Manfred, et al. “Hybrid Coupled-Mode Modeling in 3D: Perturbed and Coupled Channels, and Waveguide Crossings.” Journal of the Optical Society of America B, vol. 34, no. 3, The Optical Society, 2017, pp. 613–24, doi:10.1364/josab.34.000613.' short: M. Hammer, S. Alhaddad, J. Förstner, Journal of the Optical Society of America B 34 (2017) 613–624. date_created: 2018-08-07T08:40:41Z date_updated: 2022-01-06T06:59:38Z ddc: - '530' department: - _id: '61' doi: 10.1364/josab.34.000613 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-07T09:46:13Z date_updated: 2018-09-03T14:09:04Z file_id: '3829' file_name: 2017-02 Hammer_Hybrid coupled mode modelling in 3D_Perturbed and coupled channels and waveguide crossings_Coupled Mode Theory JOSA B.pdf file_size: 5539592 relation: main_file file_date_updated: 2018-09-03T14:09:04Z has_accepted_license: '1' intvolume: ' 34' issue: '3' keyword: - tet_topic_waveguide - tet_topic_numerics language: - iso: eng oa: '1' page: 613-624 publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published publisher: The Optical Society status: public title: 'Hybrid coupled-mode modeling in 3D: perturbed and coupled channels, and waveguide crossings' type: journal_article urn: '38287' user_id: '158' volume: 34 year: '2017' ... --- _id: '3830' abstract: - lang: eng text: "The modal properties of curved dielectric slab waveguides are investigated. We\r\nconsider quasi-confined, attenuated modes that propagate at oblique angles with respect to\r\nthe axis through the center of curvature. Our analytical model describes the transition from\r\nscalar 2-D TE/TM bend modes to lossless spiral waves at near-axis propagation angles,\r\nwith a continuum of vectorial attenuated spiral modes in between. Modal solutions are\r\ncharacterized in terms of directional wavenumbers and attenuation constants. Examples for\r\nvectorial mode profiles illustrate the effects of oblique wave propagation along the curved\r\nslab segments. For the regime of lossless spiral waves, the relation with the guided modes\r\nof corresponding dielectric tubes is demonstrated." article_type: original author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Ebers L, Hammer M, Förstner J. Spiral modes supported by circular dielectric tubes and tube segments. Optical and Quantum Electronics. 2017;49(4):49:176. doi:10.1007/s11082-017-1011-x apa: Ebers, L., Hammer, M., & Förstner, J. (2017). Spiral modes supported by circular dielectric tubes and tube segments. Optical and Quantum Electronics, 49(4), 49:176. https://doi.org/10.1007/s11082-017-1011-x bibtex: '@article{Ebers_Hammer_Förstner_2017, title={Spiral modes supported by circular dielectric tubes and tube segments}, volume={49}, DOI={10.1007/s11082-017-1011-x}, number={4}, journal={Optical and Quantum Electronics}, publisher={Springer Nature}, author={Ebers, Lena and Hammer, Manfred and Förstner, Jens}, year={2017}, pages={49:176} }' chicago: 'Ebers, Lena, Manfred Hammer, and Jens Förstner. “Spiral Modes Supported by Circular Dielectric Tubes and Tube Segments.” Optical and Quantum Electronics 49, no. 4 (2017): 49:176. https://doi.org/10.1007/s11082-017-1011-x.' ieee: L. Ebers, M. Hammer, and J. Förstner, “Spiral modes supported by circular dielectric tubes and tube segments,” Optical and Quantum Electronics, vol. 49, no. 4, p. 49:176, 2017. mla: Ebers, Lena, et al. “Spiral Modes Supported by Circular Dielectric Tubes and Tube Segments.” Optical and Quantum Electronics, vol. 49, no. 4, Springer Nature, 2017, p. 49:176, doi:10.1007/s11082-017-1011-x. short: L. Ebers, M. Hammer, J. Förstner, Optical and Quantum Electronics 49 (2017) 49:176. date_created: 2018-08-07T09:52:20Z date_updated: 2022-01-06T06:59:39Z ddc: - '530' department: - _id: '61' doi: 10.1007/s11082-017-1011-x file: - access_level: request content_type: application/pdf creator: hclaudia date_created: 2018-08-07T09:56:27Z date_updated: 2022-01-06T06:59:38Z file_id: '3831' file_name: 2017-03 Ebers, Hammer_Spiral modes supported by circular dielectric tubes and tube segments.pdf file_size: 2379736 relation: main_file file_date_updated: 2022-01-06T06:59:38Z has_accepted_license: '1' intvolume: ' 49' issue: '4' keyword: - tet_topic_waveguide language: - iso: eng page: 49:176 project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '62' name: TRR 142 - Subproject A5 publication: Optical and Quantum Electronics publication_identifier: issn: - 0306-8919 - 1572-817X publication_status: published publisher: Springer Nature status: public title: Spiral modes supported by circular dielectric tubes and tube segments type: journal_article urn: '38308' user_id: '158' volume: 49 year: '2017' ... --- _id: '3832' abstract: - lang: eng text: Controlling light emission out of subwavelength nanoslit/aperture structures is of great important for highly integrated photonic circuits. Here we propose a new method to achieve direction-tunable emission based on a compact metallic microcavity with double nanoslit. Our method combines the principles of Young’s interference and surface plasmon polaritons interference. We show that the direction of the far-field beam can be controlled over a wide range of angles by manipulating the frequency and relative phase of light arriving at the two slits, which holds promise for applications in the ultracompact optoelectronic devices. article_type: original author: - first_name: Xiaohong full_name: Song, Xiaohong last_name: Song - first_name: Nini full_name: Wang, Nini last_name: Wang - first_name: Ming full_name: Yan, Ming last_name: Yan - first_name: Cheng full_name: Lin, Cheng last_name: Lin - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Weifeng full_name: Yang, Weifeng last_name: Yang citation: ama: Song X, Wang N, Yan M, Lin C, Förstner J, Yang W. Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure. Optics Express. 2017;25(12):13207-13214. doi:10.1364/oe.25.013207 apa: Song, X., Wang, N., Yan, M., Lin, C., Förstner, J., & Yang, W. (2017). Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure. Optics Express, 25(12), 13207–13214. https://doi.org/10.1364/oe.25.013207 bibtex: '@article{Song_Wang_Yan_Lin_Förstner_Yang_2017, title={Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure}, volume={25}, DOI={10.1364/oe.25.013207}, number={12}, journal={Optics Express}, publisher={The Optical Society}, author={Song, Xiaohong and Wang, Nini and Yan, Ming and Lin, Cheng and Förstner, Jens and Yang, Weifeng}, year={2017}, pages={13207–13214} }' chicago: 'Song, Xiaohong, Nini Wang, Ming Yan, Cheng Lin, Jens Förstner, and Weifeng Yang. “Direction-Tunable Enhanced Emission from a Subwavelength Metallic Double-Nanoslit Structure.” Optics Express 25, no. 12 (2017): 13207–14. https://doi.org/10.1364/oe.25.013207.' ieee: X. Song, N. Wang, M. Yan, C. Lin, J. Förstner, and W. Yang, “Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure,” Optics Express, vol. 25, no. 12, pp. 13207–13214, 2017. mla: Song, Xiaohong, et al. “Direction-Tunable Enhanced Emission from a Subwavelength Metallic Double-Nanoslit Structure.” Optics Express, vol. 25, no. 12, The Optical Society, 2017, pp. 13207–14, doi:10.1364/oe.25.013207. short: X. Song, N. Wang, M. Yan, C. Lin, J. Förstner, W. Yang, Optics Express 25 (2017) 13207–13214. date_created: 2018-08-07T10:13:24Z date_updated: 2022-01-06T06:59:40Z ddc: - '530' department: - _id: '61' doi: 10.1364/oe.25.013207 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-07T10:17:15Z date_updated: 2018-09-03T14:12:22Z file_id: '3833' file_name: 2017-06 Xiahong_Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure_Optics Express.pdf file_size: 3225569 relation: main_file file_date_updated: 2018-09-03T14:12:22Z has_accepted_license: '1' intvolume: ' 25' issue: '12' keyword: - tet_topic_plasmonics language: - iso: eng oa: '1' page: 13207-13214 publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: The Optical Society status: public title: Direction-tunable enhanced emission from a subwavelength metallic double-nanoslit structure type: journal_article urn: '38325' user_id: '158' volume: 25 year: '2017' ...