--- _id: '43245' abstract: - lang: eng text: High-contrast slab waveguide Bragg gratings with 1D periodicity are investigated. For specific oblique excitation by semi-guided waves at sufficiently high angles of incidence, the idealized structures do not exhibit any radiative losses, such that reflectance and transmittance for the single port mode add strictly up to one. We consider a series of symmetric, fully and partly etched finite gratings, for parameters found in integrated silicon photonics. These can act as spectral filters with a reasonably flattop response. Apodization can lead to more box shaped reflectance and transmittance spectra. Together with a narrowband Fabry–Perot filter, these configurations are characterized by reflection bands, or transmittance peaks, with widths that span three orders of magnitude. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Henna full_name: Farheen, Henna last_name: Farheen - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Farheen H, Förstner J. How to suppress radiative losses in high-contrast integrated Bragg gratings. Journal of the Optical Society of America B. 2023;40(4):862. doi:10.1364/josab.485725 apa: Hammer, M., Farheen, H., & Förstner, J. (2023). How to suppress radiative losses in high-contrast integrated Bragg gratings. Journal of the Optical Society of America B, 40(4), 862. https://doi.org/10.1364/josab.485725 bibtex: '@article{Hammer_Farheen_Förstner_2023, title={How to suppress radiative losses in high-contrast integrated Bragg gratings}, volume={40}, DOI={10.1364/josab.485725}, number={4}, journal={Journal of the Optical Society of America B}, publisher={Optica Publishing Group}, author={Hammer, Manfred and Farheen, Henna and Förstner, Jens}, year={2023}, pages={862} }' chicago: 'Hammer, Manfred, Henna Farheen, and Jens Förstner. “How to Suppress Radiative Losses in High-Contrast Integrated Bragg Gratings.” Journal of the Optical Society of America B 40, no. 4 (2023): 862. https://doi.org/10.1364/josab.485725.' ieee: 'M. Hammer, H. Farheen, and J. Förstner, “How to suppress radiative losses in high-contrast integrated Bragg gratings,” Journal of the Optical Society of America B, vol. 40, no. 4, p. 862, 2023, doi: 10.1364/josab.485725.' mla: Hammer, Manfred, et al. “How to Suppress Radiative Losses in High-Contrast Integrated Bragg Gratings.” Journal of the Optical Society of America B, vol. 40, no. 4, Optica Publishing Group, 2023, p. 862, doi:10.1364/josab.485725. short: M. Hammer, H. Farheen, J. Förstner, Journal of the Optical Society of America B 40 (2023) 862. date_created: 2023-03-31T13:04:43Z date_updated: 2023-04-20T10:03:40Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/josab.485725 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2023-03-31T13:14:59Z date_updated: 2023-03-31T13:14:59Z file_id: '43247' file_name: ogr-afterreview.pdf file_size: 1982311 relation: main_file file_date_updated: 2023-03-31T13:14:59Z has_accepted_license: '1' intvolume: ' 40' issue: '4' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: '862' project: - _id: '53' name: 'TRR 142: TRR 142' - _id: '55' name: 'TRR 142 - B: TRR 142 - Project Area B' - _id: '167' name: 'TRR 142 - B06: TRR 142 - Subproject B06' publication: Journal of the Optical Society of America B publication_identifier: issn: - 0740-3224 - 1520-8540 publication_status: published publisher: Optica Publishing Group status: public title: How to suppress radiative losses in high-contrast integrated Bragg gratings type: journal_article user_id: '158' volume: 40 year: '2023' ... --- _id: '30387' abstract: - lang: eng text: Resonant evanescent coupling can be utilized to selectively excite orbital angular momentum (OAM) modes of high angular order supported by a thin circular dielectric rod. Our 2.5-D hybrid-analytical coupled mode model combines the vectorial fields associated with the fundamental TE- and TM-modes of a standard silicon photonics slab waveguide, propagating at oblique angles with respect to the rod axis, and the hybrid modes supported by the rod. One observes an efficient resonant interaction in cases where the common axial wavenumber of the waves in the slab matches the propagation constant of one or more modes of the rod. For certain modes of high angular order, the incident wave is able to transfer its directionality to the field in the fiber, exciting effectively only one of a pair of degenerate OAM modes 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. Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber. In: Andrews DL, Galvez EJ, Rubinsztein-Dunlop H, eds. Complex Light and Optical Forces XVI. SPIE; 2022:120170F. doi:10.1117/12.2612179' apa: Hammer, M., Ebers, L., & Förstner, J. (2022). Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber. In D. L. Andrews, E. J. Galvez, & H. Rubinsztein-Dunlop (Eds.), Complex Light and Optical Forces XVI (p. 120170F). SPIE. https://doi.org/10.1117/12.2612179 bibtex: '@inproceedings{Hammer_Ebers_Förstner_2022, title={Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber}, DOI={10.1117/12.2612179}, booktitle={Complex Light and Optical Forces XVI}, publisher={SPIE}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, editor={Andrews, David L. and Galvez, Enrique J. and Rubinsztein-Dunlop, Halina}, year={2022}, pages={120170F} }' chicago: Hammer, Manfred, Lena Ebers, and Jens Förstner. “Resonant Evanescent Excitation of OAM Modes in a High-Contrast Circular Step-Index Fiber.” In Complex Light and Optical Forces XVI, edited by David L. Andrews, Enrique J. Galvez, and Halina Rubinsztein-Dunlop, 120170F. SPIE, 2022. https://doi.org/10.1117/12.2612179. ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber,” in Complex Light and Optical Forces XVI, 2022, p. 120170F, doi: 10.1117/12.2612179.' mla: Hammer, Manfred, et al. “Resonant Evanescent Excitation of OAM Modes in a High-Contrast Circular Step-Index Fiber.” Complex Light and Optical Forces XVI, edited by David L. Andrews et al., SPIE, 2022, p. 120170F, doi:10.1117/12.2612179. short: 'M. Hammer, L. Ebers, J. Förstner, in: D.L. Andrews, E.J. Galvez, H. Rubinsztein-Dunlop (Eds.), Complex Light and Optical Forces XVI, SPIE, 2022, p. 120170F.' date_created: 2022-03-21T10:12:58Z date_updated: 2022-03-22T18:04:20Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1117/12.2612179 editor: - first_name: David L. full_name: Andrews, David L. last_name: Andrews - first_name: Enrique J. full_name: Galvez, Enrique J. last_name: Galvez - first_name: Halina full_name: Rubinsztein-Dunlop, Halina last_name: Rubinsztein-Dunlop file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2022-03-22T18:03:50Z date_updated: 2022-03-22T18:03:50Z file_id: '30444' file_name: 2022-03 Hammer - SPIE Photonics West 2022 - Resonant evanescent excitation of OAM modes in a high-contrast circular (official version).pdf file_size: 2015899 relation: main_file file_date_updated: 2022-03-22T18:03:50Z has_accepted_license: '1' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: 120170F project: - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' - _id: '53' name: 'TRR 142: TRR 142' - _id: '75' name: 'TRR 142 - C5: TRR 142 - Subproject C5' publication: Complex Light and Optical Forces XVI publication_status: published publisher: SPIE status: public title: Resonant evanescent excitation of OAM modes in a high-contrast circular step-index fiber type: conference user_id: '158' year: '2022' ... --- _id: '30722' abstract: - lang: eng text: In dieser Arbeit wird die elektromagnetische Wellenausbreitung in integrierten optischen Wellenleitern mit Hilfe von halb analytischen und numerischen Simulationsmethoden untersucht. Im ersten Teil werden 2-D Si/SiO2-Wellenleiterkonfigurationen mit hohem Brechungsindexkontrast betrachtet. Die Strukturen werden mit halb geführten Wellen unter schrägen Ausbreitungswinkeln angeregt. Dadurch kann die Leistungsübertragung zu bestimmten ausgehenden Moden unterdrückt werden, wodurch vollständig verlustfreie Systeme entstehen. Zusätzlich dient die Anregung mit einem seitlich begrenzten, einfallenden Wellenbündel aus halb geführten Wellen dazu, praktisch relevantere 3-D Konfigurationen zu realisieren. Darüber hinaus wird eine schrittweise Winkelspektrum-Methode vorgestellt, die es ermöglicht, in Kombination mit voll vektoriellen 2-D Finite-Elemente-Lösungen für Teilprobleme mit geringerer Komplexität, die Wellenausbreitung in planaren, linsenförmigen Wellenleitern numerisch in drei Raumrichtungen zu berechnen. Im zweiten Teil dieser Arbeit wird die Ausbreitung in Wellenleiterstrukturen aus Lithiumniobat untersucht, welche für quantenoptische Effekte genutzt werden. Zur Detektion einzelner Photonen werden supraleitende Nanodrähte auf eindiffundierten Lithiumniobat Wellenleitern mit zusätzlicher Taperschicht aus Silizium betrachtet. Um die Wellenausbreitung in diesen 3-D Wellenleitern zu beschreiben, wird eine einseitig gerichtete Finite-Elemente „Modal Matching“ Methode eingeführt. Abschließend werden Rippenwellenleiter aus Lithiumniobat analysiert, die auf Siliziumdioxid Plattformen aufgebracht sind. Der Schwerpunkt liegt hier auf dem nichtlinearen „Parametric Down-Conversion“ Prozess, der für die Erzeugung verschränkter Photonen verwendet wird. - lang: eng text: In this work, the electromagnetic wave propagation in integrated optical waveguides is studied by using semi-analytical and numerical simulation methods. In the first part, 2-D high-index contrast Si/SiO2 dielectric slab waveguide configurations are investigated. The structures are excited with semi-guided waves at oblique angles of propagation. Due to this, power transfer to specific outgoing modes can be suppressed, resulting in completely lossless configurations. The excitation is further examined for incoming, laterally confined wave bundles of semi-guided waves to realize practically more relevant 3-D configurations. Additionally, a stepwise angular spectrum method in combination with full vectorial 2-D finite element solutions for subproblems of lower complexity to numerically simulate the wave propagation in full 3-D planar lens-like waveguides is presented. In the second part, the wave propagation in lithium niobate waveguide structures is examined, which are used for quantum optical effects. On the one hand, superconducting nanowires on titanium in-diffused lithium niobate waveguides with an additional tapered silicon layer are used for single photon detection. The wave propagation in these 3-D multiscale tapers is studied by introducing a unidirectional finite element modal matching method. On the other hand, lithium niobate rib waveguides on silicon dioxide platforms are analyzed, focusing on the nonlinear parametric down-conversion process used for the generation of entangled photons. author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers citation: ama: Ebers L. Semi-Guided Waves in Integrated Optical Waveguide Structures.; 2022. doi:10.17619/UNIPB/1-1288 apa: Ebers, L. (2022). Semi-guided waves in integrated optical waveguide structures. https://doi.org/10.17619/UNIPB/1-1288 bibtex: '@book{Ebers_2022, title={Semi-guided waves in integrated optical waveguide structures}, DOI={10.17619/UNIPB/1-1288}, author={Ebers, Lena}, year={2022} }' chicago: Ebers, Lena. Semi-Guided Waves in Integrated Optical Waveguide Structures, 2022. https://doi.org/10.17619/UNIPB/1-1288. ieee: L. Ebers, Semi-guided waves in integrated optical waveguide structures. 2022. mla: Ebers, Lena. Semi-Guided Waves in Integrated Optical Waveguide Structures. 2022, doi:10.17619/UNIPB/1-1288. short: L. Ebers, Semi-Guided Waves in Integrated Optical Waveguide Structures, 2022. date_created: 2022-03-29T18:42:08Z date_updated: 2022-03-29T18:44:30Z department: - _id: '61' - _id: '230' doi: 10.17619/UNIPB/1-1288 keyword: - tet_topic_waveguide language: - iso: eng status: public supervisor: - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 title: Semi-guided waves in integrated optical waveguide structures type: dissertation user_id: '158' year: '2022' ... --- _id: '35128' abstract: - lang: eng text: Here we demonstrate a new, to the best of our knowledge, type of 3-dB coupler that has an ultra-broadband operational range from 1300 to 1600 nm with low fabrication sensitivity. The overall device size is 800 µm including in/out S-bend waveguides. The coupler is an asymmetric non-uniform directional coupler that consists of two tapered waveguides. One of the coupler arms is shifted by 100 µm in the propagation direction, which results in a more wavelength-insensitive 3-dB response compared to a standard (not shifted) coupler. Moreover, compared to a long adiabatic coupler, we achieved a similar wavelength response at a 16-times-smaller device length. The couplers were fabricated using the silicon nitride platform of Lionix International. We also experimentally demonstrated an optical switch that is made by using two of these couplers in a Mach–Zehnder interferometer configuration. According to experimental results, this optical switch exhibits –10 dB of extinction ratio over the 1500–1600 nm wavelength range. Our results indicate that this new type of coupler holds great promise for various applications, including optical imaging, telecommunications, and reconfigurable photonic processors where compact, fabrication-tolerant, and wavelength-insensitive couplers are essential. author: - first_name: Hamed full_name: Nikbakht, Hamed last_name: Nikbakht - first_name: Mohammad Talebi full_name: Khoshmehr, Mohammad Talebi last_name: Khoshmehr - first_name: Bob full_name: van Someren, Bob last_name: van Someren - first_name: Dieter full_name: Teichrib, Dieter last_name: Teichrib - 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: B. Imran full_name: Akca, B. Imran last_name: Akca citation: ama: Nikbakht H, Khoshmehr MT, van Someren B, et al. Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint. Optics Letters. 2022;48(2):207. doi:10.1364/ol.476537 apa: Nikbakht, H., Khoshmehr, M. T., van Someren, B., Teichrib, D., Hammer, M., Förstner, J., & Akca, B. I. (2022). Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint. Optics Letters, 48(2), 207. https://doi.org/10.1364/ol.476537 bibtex: '@article{Nikbakht_Khoshmehr_van Someren_Teichrib_Hammer_Förstner_Akca_2022, title={Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint}, volume={48}, DOI={10.1364/ol.476537}, number={2}, journal={Optics Letters}, publisher={Optica Publishing Group}, author={Nikbakht, Hamed and Khoshmehr, Mohammad Talebi and van Someren, Bob and Teichrib, Dieter and Hammer, Manfred and Förstner, Jens and Akca, B. Imran}, year={2022}, pages={207} }' chicago: 'Nikbakht, Hamed, Mohammad Talebi Khoshmehr, Bob van Someren, Dieter Teichrib, Manfred Hammer, Jens Förstner, and B. Imran Akca. “Asymmetric, Non-Uniform 3-DB Directional Coupler with 300-Nm Bandwidth and a Small Footprint.” Optics Letters 48, no. 2 (2022): 207. https://doi.org/10.1364/ol.476537.' ieee: 'H. Nikbakht et al., “Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint,” Optics Letters, vol. 48, no. 2, p. 207, 2022, doi: 10.1364/ol.476537.' mla: Nikbakht, Hamed, et al. “Asymmetric, Non-Uniform 3-DB Directional Coupler with 300-Nm Bandwidth and a Small Footprint.” Optics Letters, vol. 48, no. 2, Optica Publishing Group, 2022, p. 207, doi:10.1364/ol.476537. short: H. Nikbakht, M.T. Khoshmehr, B. van Someren, D. Teichrib, M. Hammer, J. Förstner, B.I. Akca, Optics Letters 48 (2022) 207. date_created: 2023-01-03T09:32:47Z date_updated: 2023-01-03T10:37:34Z ddc: - '530' department: - _id: '61' - _id: '230' doi: 10.1364/ol.476537 file: - access_level: local content_type: application/pdf creator: fossie date_created: 2023-01-03T09:36:34Z date_updated: 2023-01-03T09:36:34Z embargo: 2024-01-03 embargo_to: open_access file_id: '35129' file_name: 2023-01 Nikbakht - Optics Letter - Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and small footprint.pdf file_size: 3731864 relation: main_file file_date_updated: 2023-01-03T09:36:34Z has_accepted_license: '1' intvolume: ' 48' issue: '2' keyword: - tet_topic_waveguide language: - iso: eng page: '207' publication: Optics Letters publication_identifier: issn: - 0146-9592 - 1539-4794 publication_status: published publisher: Optica Publishing Group status: public title: Asymmetric, non-uniform 3-dB directional coupler with 300-nm bandwidth and a small footprint type: journal_article user_id: '158' volume: 48 year: '2022' ... --- _id: '30210' abstract: - lang: eng text: Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properly use these components in the implementation of different quantum protocols, photons with different properties are required. In this paper, we theoretically demonstrate a flexible source of correlated photons built on the LNOI waveguide of a special geometry. This source is based on the parametric down-conversion (PDC) process, in which the signal and idler photons are generated at the telecom wavelength and have different spatial profiles and polarizations, but the same group velocities. Distinguishability in polarizations and spatial profiles facilitates the routing and manipulating individual photons, while the equality of their group velocities leads to the absence of temporal walk-off between photons. We show how the spectral properties of the generated photons and the number of their frequency modes can be controlled depending on the pump characteristics and the waveguide length. Finally, we discuss special regimes, in which narrowband light with strong frequency correlations and polarization-entangled Bell states are generated at the telecom wavelength. author: - first_name: Lena full_name: Ebers, Lena id: '40428' last_name: Ebers - first_name: Alessandro full_name: Ferreri, Alessandro id: '65609' last_name: Ferreri - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Polina R. full_name: Sharapova, Polina R. id: '60286' last_name: Sharapova citation: ama: 'Ebers L, Ferreri A, Hammer M, et al. Flexible source of correlated photons based on LNOI rib waveguides. Journal of Physics: Photonics. 2022;4:025001. doi:10.1088/2515-7647/ac5a5b' apa: 'Ebers, L., Ferreri, A., Hammer, M., Albert, M., Meier, C., Förstner, J., & Sharapova, P. R. (2022). Flexible source of correlated photons based on LNOI rib waveguides. Journal of Physics: Photonics, 4, 025001. https://doi.org/10.1088/2515-7647/ac5a5b' bibtex: '@article{Ebers_Ferreri_Hammer_Albert_Meier_Förstner_Sharapova_2022, title={Flexible source of correlated photons based on LNOI rib waveguides}, volume={4}, DOI={10.1088/2515-7647/ac5a5b}, journal={Journal of Physics: Photonics}, publisher={IOP Publishing}, author={Ebers, Lena and Ferreri, Alessandro and Hammer, Manfred and Albert, Maximilian and Meier, Cedrik and Förstner, Jens and Sharapova, Polina R.}, year={2022}, pages={025001} }' chicago: 'Ebers, Lena, Alessandro Ferreri, Manfred Hammer, Maximilian Albert, Cedrik Meier, Jens Förstner, and Polina R. Sharapova. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics 4 (2022): 025001. https://doi.org/10.1088/2515-7647/ac5a5b.' ieee: 'L. Ebers et al., “Flexible source of correlated photons based on LNOI rib waveguides,” Journal of Physics: Photonics, vol. 4, p. 025001, 2022, doi: 10.1088/2515-7647/ac5a5b.' mla: 'Ebers, Lena, et al. “Flexible Source of Correlated Photons Based on LNOI Rib Waveguides.” Journal of Physics: Photonics, vol. 4, IOP Publishing, 2022, p. 025001, doi:10.1088/2515-7647/ac5a5b.' short: 'L. Ebers, A. Ferreri, M. Hammer, M. Albert, C. Meier, J. Förstner, P.R. Sharapova, Journal of Physics: Photonics 4 (2022) 025001.' date_created: 2022-03-07T09:51:50Z date_updated: 2023-03-24T07:39:18Z department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' - _id: '569' - _id: '170' - _id: '287' doi: 10.1088/2515-7647/ac5a5b intvolume: ' 4' keyword: - tet_topic_waveguide language: - iso: eng page: '025001' project: - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' - _id: '75' name: 'TRR 142 - C5: TRR 142 - Subproject C5' - _id: '72' name: 'TRR 142 - C2: TRR 142 - Subproject C2' - _id: '53' name: 'TRR 142: TRR 142' publication: 'Journal of Physics: Photonics' publication_identifier: issn: - 2515-7647 publication_status: published publisher: IOP Publishing related_material: link: - description: Corrigendum for table C1 relation: erratum url: https://doi.org/10.1088/2515-7647/acc70c status: public title: Flexible source of correlated photons based on LNOI rib waveguides type: journal_article user_id: '158' volume: 4 year: '2022' ... --- _id: '30389' abstract: - lang: eng text: Online solvers for a series of standard 1-D or 2-D problems in integrated optics will be discussed. Implemented on the basis of HTML/JavaScript/SVG with core routines compiled from well tested C++-sources, the quasi-analytical algorithms require a computational load that can be handled easily even by current mobile devices. So far the series covers the 1-D guided modes of dielectric multilayer slab waveguides and the oblique plane wave reflection from these, the modes of rectangular channel waveguides (in an approximation of effective indices), bend modes of curved multilayer slabs, whispering-gallery resonances (“Quasi-Normal-Modes”) supported by circular dielectric cavities, the hybrid modes of circular multi-step-index optical fibers, bound and leaky modes of 1-D complex multilayers, including plasmonic surface modes, and, with restrictions, quite general rectangular scattering problems in 2-D. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: 'Hammer M. Small-scale online simulations in guided-wave photonics. In: García-Blanco SM, Cheben P, eds. Integrated Optics: Devices, Materials, and Technologies XXVI. SPIE; 2022:1200414. doi:10.1117/12.2612208' apa: 'Hammer, M. (2022). Small-scale online simulations in guided-wave photonics. In S. M. García-Blanco & P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVI (p. 1200414). SPIE. https://doi.org/10.1117/12.2612208' bibtex: '@inproceedings{Hammer_2022, title={Small-scale online simulations in guided-wave photonics}, DOI={10.1117/12.2612208}, booktitle={Integrated Optics: Devices, Materials, and Technologies XXVI}, publisher={SPIE}, author={Hammer, Manfred}, editor={García-Blanco, Sonia M. and Cheben, Pavel}, year={2022}, pages={1200414} }' chicago: 'Hammer, Manfred. “Small-Scale Online Simulations in Guided-Wave Photonics.” In Integrated Optics: Devices, Materials, and Technologies XXVI, edited by Sonia M. García-Blanco and Pavel Cheben, 1200414. SPIE, 2022. https://doi.org/10.1117/12.2612208.' ieee: 'M. Hammer, “Small-scale online simulations in guided-wave photonics,” in Integrated Optics: Devices, Materials, and Technologies XXVI, 2022, p. 1200414, doi: 10.1117/12.2612208.' mla: 'Hammer, Manfred. “Small-Scale Online Simulations in Guided-Wave Photonics.” Integrated Optics: Devices, Materials, and Technologies XXVI, edited by Sonia M. García-Blanco and Pavel Cheben, SPIE, 2022, p. 1200414, doi:10.1117/12.2612208.' short: 'M. Hammer, in: S.M. García-Blanco, P. Cheben (Eds.), Integrated Optics: Devices, Materials, and Technologies XXVI, SPIE, 2022, p. 1200414.' date_created: 2022-03-21T10:17:30Z date_updated: 2023-04-20T10:10:55Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1117/12.2612208 editor: - first_name: Sonia M. full_name: García-Blanco, Sonia M. last_name: García-Blanco - first_name: Pavel full_name: Cheben, Pavel last_name: Cheben file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2022-03-22T18:05:02Z date_updated: 2022-03-22T18:05:02Z file_id: '30445' file_name: 2022-03 Hammer - SPIE Photonics West 2022 - Small-scale online simulations in guided-wave photonics (official version).pdf file_size: 868473 relation: main_file file_date_updated: 2022-03-22T18:05:02Z has_accepted_license: '1' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: '1200414' project: - _id: '53' name: 'TRR 142: TRR 142' - _id: '56' name: 'TRR 142 - C: TRR 142 - Project Area C' - _id: '75' name: 'TRR 142 - C05: TRR 142 - Subproject C05' publication: 'Integrated Optics: Devices, Materials, and Technologies XXVI' publication_status: published publisher: SPIE status: public title: Small-scale online simulations in guided-wave photonics type: conference user_id: '158' year: '2022' ... --- _id: '28196' abstract: - lang: eng text: We show that narrow trenches in a high-contrast silicon-photonics slab can act as lossless power dividers for semi-guided waves. Reflectance and transmittance can be easily configured by selecting the trench width. At sufficiently high angles of incidence, the devices are lossless, apart from material attenuation and scattering due to surface roughness. We numerically simulate a series of devices within the full 0-to-1-range of splitting ratios, for semi-guided plane wave incidence as well as for excitation by focused Gaussian wave bundles. Straightforward cascading of the trenches leads to concepts for 1×M-power dividers and a polarization beam splitter. 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. Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum. 2021;4(12):3081. doi:10.1364/osac.437549 apa: Hammer, M., Ebers, L., & Förstner, J. (2021). Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics. OSA Continuum, 4(12), 3081. https://doi.org/10.1364/osac.437549 bibtex: '@article{Hammer_Ebers_Förstner_2021, title={Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics}, volume={4}, DOI={10.1364/osac.437549}, number={12}, journal={OSA Continuum}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2021}, pages={3081} }' chicago: 'Hammer, Manfred, Lena Ebers, and Jens Förstner. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” OSA Continuum 4, no. 12 (2021): 3081. https://doi.org/10.1364/osac.437549.' ieee: 'M. Hammer, L. Ebers, and J. Förstner, “Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics,” OSA Continuum, vol. 4, no. 12, p. 3081, 2021, doi: 10.1364/osac.437549.' mla: Hammer, Manfred, et al. “Configurable Lossless Broadband Beam Splitters for Semi-Guided Waves in Integrated Silicon Photonics.” OSA Continuum, vol. 4, no. 12, 2021, p. 3081, doi:10.1364/osac.437549. short: M. Hammer, L. Ebers, J. Förstner, OSA Continuum 4 (2021) 3081. date_created: 2021-11-30T20:04:57Z date_updated: 2022-11-18T09:58:03Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1364/osac.437549 file: - access_level: open_access content_type: application/pdf creator: fossie date_created: 2021-11-30T20:07:53Z date_updated: 2021-11-30T20:19:15Z file_id: '28197' file_name: 2021-11 Hammer - OSA Continuum - Trenches.pdf file_size: 6618403 relation: main_file file_date_updated: 2021-11-30T20:19:15Z has_accepted_license: '1' intvolume: ' 4' issue: '12' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: '3081' project: - _id: '53' name: TRR 142 - _id: '56' name: TRR 142 - Project Area C publication: OSA Continuum publication_identifier: issn: - 2578-7519 publication_status: published status: public title: Configurable lossless broadband beam splitters for semi-guided waves in integrated silicon photonics type: journal_article user_id: '477' volume: 4 year: '2021' ... --- _id: '21719' abstract: - lang: eng text: We fabricate silicon tapers to increase the mode overlap of superconducting detectors on Ti:LiNbO3 waveguides. Mode images show a reduction in mode size from 6 µm to 2 µm FWHM, agreeing with beam propagation simulations. article_number: QTh7A.8 author: - first_name: Maximilian full_name: Protte, Maximilian id: '46170' last_name: Protte - 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: Jan Philipp full_name: Höpker, Jan Philipp id: '33913' last_name: Höpker - first_name: Maximilian full_name: Albert, Maximilian last_name: Albert - first_name: Viktor full_name: Quiring, Viktor last_name: Quiring - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Christine full_name: Silberhorn, Christine id: '26263' last_name: Silberhorn - first_name: Tim full_name: Bartley, Tim id: '49683' last_name: Bartley citation: ama: 'Protte M, Ebers L, Hammer M, et al. Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics. In: OSA Quantum 2.0 Conference. ; 2020. doi:10.1364/quantum.2020.qth7a.8' apa: Protte, M., Ebers, L., Hammer, M., Höpker, J. P., Albert, M., Quiring, V., Meier, C., Förstner, J., Silberhorn, C., & Bartley, T. (2020). Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics. OSA Quantum 2.0 Conference, Article QTh7A.8. https://doi.org/10.1364/quantum.2020.qth7a.8 bibtex: '@inproceedings{Protte_Ebers_Hammer_Höpker_Albert_Quiring_Meier_Förstner_Silberhorn_Bartley_2020, title={Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics}, DOI={10.1364/quantum.2020.qth7a.8}, number={QTh7A.8}, booktitle={OSA Quantum 2.0 Conference}, author={Protte, Maximilian and Ebers, Lena and Hammer, Manfred and Höpker, Jan Philipp and Albert, Maximilian and Quiring, Viktor and Meier, Cedrik and Förstner, Jens and Silberhorn, Christine and Bartley, Tim}, year={2020} }' chicago: Protte, Maximilian, Lena Ebers, Manfred Hammer, Jan Philipp Höpker, Maximilian Albert, Viktor Quiring, Cedrik Meier, Jens Förstner, Christine Silberhorn, and Tim Bartley. “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics.” In OSA Quantum 2.0 Conference, 2020. https://doi.org/10.1364/quantum.2020.qth7a.8. ieee: 'M. Protte et al., “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics,” 2020, doi: 10.1364/quantum.2020.qth7a.8.' mla: Protte, Maximilian, et al. “Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics.” OSA Quantum 2.0 Conference, QTh7A.8, 2020, doi:10.1364/quantum.2020.qth7a.8. short: 'M. Protte, L. Ebers, M. Hammer, J.P. Höpker, M. Albert, V. Quiring, C. Meier, J. Förstner, C. Silberhorn, T. Bartley, in: OSA Quantum 2.0 Conference, 2020.' date_created: 2021-04-22T15:56:45Z date_updated: 2022-10-25T07:41:15Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' - _id: '15' doi: 10.1364/quantum.2020.qth7a.8 file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2021-04-22T15:58:52Z date_updated: 2021-04-22T15:58:52Z file_id: '21720' file_name: Quantum2.0-Towards SSC hybrid integration for quantum photonics[4936].pdf file_size: 1704199 relation: main_file success: 1 file_date_updated: 2021-04-22T15:58:52Z has_accepted_license: '1' keyword: - tet_topic_waveguide language: - iso: eng publication: OSA Quantum 2.0 Conference publication_identifier: isbn: - '9781943580811' publication_status: published status: public title: Towards Semiconductor-Superconductor-Crystal Hybrid Integration for Quantum Photonics type: conference user_id: '49683' year: '2020' ... --- _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: '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: '3543' author: - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Samer full_name: Alhaddad, Samer id: '42456' last_name: Alhaddad - 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: 'Hildebrandt A, Alhaddad S, Hammer M, Förstner J. Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits. In: Broquin J-E, Nunzi Conti G, eds. Integrated Optics: Devices, Materials, and Technologies XX. SPIE; 2016. doi:10.1117/12.2214460' apa: 'Hildebrandt, A., Alhaddad, S., Hammer, M., & Förstner, J. (2016). Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits. In J.-E. Broquin & G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX. SPIE. https://doi.org/10.1117/12.2214460' bibtex: '@inproceedings{Hildebrandt_Alhaddad_Hammer_Förstner_2016, title={Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits}, DOI={10.1117/12.2214460}, booktitle={Integrated Optics: Devices, Materials, and Technologies XX}, publisher={SPIE}, author={Hildebrandt, Andre and Alhaddad, Samer and Hammer, Manfred and Förstner, Jens}, editor={Broquin, Jean-Emmanuel and Nunzi Conti, GualtieroEditors}, year={2016} }' chicago: 'Hildebrandt, Andre, Samer Alhaddad, Manfred Hammer, and Jens Förstner. “Oblique Incidence of Semi-Guided Waves on Step-like Folds in Planar Dielectric Slabs: Lossless Vertical Interconnects in 3D Integrated Photonic Circuits.” In Integrated Optics: Devices, Materials, and Technologies XX, edited by Jean-Emmanuel Broquin and Gualtiero Nunzi Conti. SPIE, 2016. https://doi.org/10.1117/12.2214460.' ieee: 'A. Hildebrandt, S. Alhaddad, M. Hammer, and J. Förstner, “Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits,” in Integrated Optics: Devices, Materials, and Technologies XX, 2016.' mla: 'Hildebrandt, Andre, et al. “Oblique Incidence of Semi-Guided Waves on Step-like Folds in Planar Dielectric Slabs: Lossless Vertical Interconnects in 3D Integrated Photonic Circuits.” Integrated Optics: Devices, Materials, and Technologies XX, edited by Jean-Emmanuel Broquin and Gualtiero Nunzi Conti, SPIE, 2016, doi:10.1117/12.2214460.' short: 'A. Hildebrandt, S. Alhaddad, M. Hammer, J. Förstner, in: J.-E. Broquin, G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX, SPIE, 2016.' date_created: 2018-07-11T09:35:06Z date_updated: 2022-01-06T06:59:23Z ddc: - '530' department: - _id: '61' - _id: '230' - _id: '429' doi: 10.1117/12.2214460 editor: - first_name: Jean-Emmanuel full_name: Broquin, Jean-Emmanuel last_name: Broquin - first_name: Gualtiero full_name: Nunzi Conti, Gualtiero last_name: Nunzi Conti file: - access_level: closed content_type: application/pdf creator: fossie date_created: 2018-07-11T09:38:29Z date_updated: 2018-07-11T09:38:29Z file_id: '3544' file_name: 2016-02 Hildebrandt SPIE OPTO 2016.pdf file_size: 1239213 relation: main_file success: 1 file_date_updated: 2018-07-11T09:38:29Z has_accepted_license: '1' keyword: - tet_topic_waveguide language: - iso: eng publication: 'Integrated Optics: Devices, Materials, and Technologies XX' publication_status: published publisher: SPIE status: public title: 'Oblique incidence of semi-guided waves on step-like folds in planar dielectric slabs: Lossless vertical interconnects in 3D integrated photonic circuits' type: conference user_id: '158' year: '2016' ... --- _id: '3934' abstract: - lang: eng text: Typical optical integrated circuits combine elements, like straight and curved waveguides, or cavities, the simulation and design of which is well established through numerical eigenproblem-solvers. It remains to predict the interaction of these modes. We address this task by a ”Hybrid” variant (HCMT) of Coupled Mode Theory. Using methods from finite-element numerics, the optical properties of a circuit are approximated by superpositions of eigen-solutions for its constituents, leading to quantitative, low-dimensional, and interpretable models in the frequency domain. Spectral scans are complemented by the direct computation of supermode properties (spectral positions and linewidths, coupling-induced phase shifts). This contribution outlines the theoretical background, and discusses briefly limitations and implementational details, with the help of an example of a 2-D coupled-resonator-optical-waveguide configuration. author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: 'Hammer M. Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling. In: Broquin J-E, Nunzi Conti G, eds. Integrated Optics: Devices, Materials, and Technologies XX. SPIE; 2016:975018-975018-8. doi:10.1117/12.2214331' apa: 'Hammer, M. (2016). Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling. In J.-E. Broquin & G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX (pp. 975018-975018–8). San Francisco, USA: SPIE. https://doi.org/10.1117/12.2214331' bibtex: '@inproceedings{Hammer_2016, title={Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling}, DOI={10.1117/12.2214331}, number={9750}, booktitle={Integrated Optics: Devices, Materials, and Technologies XX}, publisher={SPIE}, author={Hammer, Manfred}, editor={Broquin, Jean-Emmanuel and Nunzi Conti, GualtieroEditors}, year={2016}, pages={975018-975018–8} }' chicago: 'Hammer, Manfred. “Wave Interaction in Photonic Integrated Circuits: Hybrid Analytical / Numerical Coupled Mode Modeling.” In Integrated Optics: Devices, Materials, and Technologies XX, edited by Jean-Emmanuel Broquin and Gualtiero Nunzi Conti, 975018-975018–8. SPIE, 2016. https://doi.org/10.1117/12.2214331.' ieee: 'M. Hammer, “Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling,” in Integrated Optics: Devices, Materials, and Technologies XX, San Francisco, USA, 2016, no. 9750, pp. 975018-975018–8.' mla: 'Hammer, Manfred. “Wave Interaction in Photonic Integrated Circuits: Hybrid Analytical / Numerical Coupled Mode Modeling.” Integrated Optics: Devices, Materials, and Technologies XX, edited by Jean-Emmanuel Broquin and Gualtiero Nunzi Conti, no. 9750, SPIE, 2016, pp. 975018-975018–8, doi:10.1117/12.2214331.' short: 'M. Hammer, in: J.-E. Broquin, G. Nunzi Conti (Eds.), Integrated Optics: Devices, Materials, and Technologies XX, SPIE, 2016, pp. 975018-975018–8.' conference: location: San Francisco, USA name: Photonics West 2016/OPTO 2016 date_created: 2018-08-20T09:25:13Z date_updated: 2022-01-06T06:59:56Z department: - _id: '61' doi: 10.1117/12.2214331 editor: - first_name: Jean-Emmanuel full_name: Broquin, Jean-Emmanuel last_name: Broquin - first_name: Gualtiero full_name: Nunzi Conti, Gualtiero last_name: Nunzi Conti issue: '9750' keyword: - tet_topic_waveguide - tet_topic_numerics language: - iso: eng page: '975018-975018-8 ' publication: 'Integrated Optics: Devices, Materials, and Technologies XX' publication_status: published publisher: SPIE status: public title: 'Wave interaction in photonic integrated circuits: Hybrid analytical / numerical coupled mode modeling' type: conference user_id: '55706' year: '2016' ... --- _id: '3845' abstract: - lang: eng text: The device principle of a prism-based on-chip spectrometer for TE polarization is introduced. The spectrometer exploits the modal dispersion in planar waveguides in a layout with slab regions having two different thicknesses of the guiding layer. The set-up uses parabolic mirrors, for the collimation of light of the input waveguide and focusing of the light to the receiver waveguides, which relies on total internal reflection at the interface between two such regions. These regions are connected adiabatically to prevent unwanted mode conversion and loss at the edges of the prism. The structure can be fabricated with two wet etching steps. The paper presents basic theory and a general approach for device optimization. The latter is illustrated with a numerical example assuming SiON technology. article_type: original author: - first_name: F. full_name: Civitci, F. last_name: Civitci - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: H.J.W.M. full_name: Hoekstra, H.J.W.M. last_name: Hoekstra citation: ama: Civitci F, Hammer M, Hoekstra HJWM. Planar prism spectrometer based on adiabatically connected waveguiding slabs. Optics Communications. 2015;365:29-37. doi:10.1016/j.optcom.2015.11.066 apa: Civitci, F., Hammer, M., & Hoekstra, H. J. W. M. (2015). Planar prism spectrometer based on adiabatically connected waveguiding slabs. Optics Communications, 365, 29–37. https://doi.org/10.1016/j.optcom.2015.11.066 bibtex: '@article{Civitci_Hammer_Hoekstra_2015, title={Planar prism spectrometer based on adiabatically connected waveguiding slabs}, volume={365}, DOI={10.1016/j.optcom.2015.11.066}, journal={Optics Communications}, publisher={Elsevier BV}, author={Civitci, F. and Hammer, Manfred and Hoekstra, H.J.W.M.}, year={2015}, pages={29–37} }' chicago: 'Civitci, F., Manfred Hammer, and H.J.W.M. Hoekstra. “Planar Prism Spectrometer Based on Adiabatically Connected Waveguiding Slabs.” Optics Communications 365 (2015): 29–37. https://doi.org/10.1016/j.optcom.2015.11.066.' ieee: F. Civitci, M. Hammer, and H. J. W. M. Hoekstra, “Planar prism spectrometer based on adiabatically connected waveguiding slabs,” Optics Communications, vol. 365, pp. 29–37, 2015. mla: Civitci, F., et al. “Planar Prism Spectrometer Based on Adiabatically Connected Waveguiding Slabs.” Optics Communications, vol. 365, Elsevier BV, 2015, pp. 29–37, doi:10.1016/j.optcom.2015.11.066. short: F. Civitci, M. Hammer, H.J.W.M. Hoekstra, Optics Communications 365 (2015) 29–37. date_created: 2018-08-08T10:27:57Z date_updated: 2022-01-06T06:59:44Z ddc: - '530' department: - _id: '61' doi: 10.1016/j.optcom.2015.11.066 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-08T10:31:23Z date_updated: 2018-08-08T10:31:23Z file_id: '3846' file_name: 2016 Hammer_Planar prism spectrometer based on adiabatically connected waveguiding slabs.pdf file_size: 1542539 relation: main_file success: 1 file_date_updated: 2018-08-08T10:31:23Z has_accepted_license: '1' intvolume: ' 365' keyword: - tet_topic_waveguide language: - iso: eng page: 29-37 publication: Optics Communications publication_identifier: issn: - 0030-4018 publication_status: published publisher: Elsevier BV status: public title: Planar prism spectrometer based on adiabatically connected waveguiding slabs type: journal_article user_id: '55706' volume: 365 year: '2015' ... --- _id: '3847' abstract: - lang: eng text: "Sheets of slab waveguides with sharp corners are investigated. By means of rigorous\r\nnumerical experiments, we look at oblique incidence of semi-guided plane waves. Radiation losses\r\nvanish beyond a certain critical angle of incidence. One can thus realize lossless propagation through\r\n90-degree corner configurations, where the remaining guided waves are still subject to pronounced\r\nreflection and polarization conversion. A system of two corners can be viewed as a structure akin to\r\na Fabry-Perot-interferometer. By adjusting the distance between the two partial reflectors, here the\r\n90-degree corners, one identifies step-like configurations that transmit the semi-guided plane waves\r\nwithout radiation losses, and virtually without reflections. Simulations of semi-guided beams with\r\nin-plane wide Gaussian profiles show that the effect survives in a true 3-D framework." article_type: original author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Hildebrandt A, Förstner J. Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence. Journal of Lightwave Technology. 2015;34(3):997-1005. doi:10.1109/jlt.2015.2502431 apa: Hammer, M., Hildebrandt, A., & Förstner, J. (2015). Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence. Journal of Lightwave Technology, 34(3), 997–1005. https://doi.org/10.1109/jlt.2015.2502431 bibtex: '@article{Hammer_Hildebrandt_Förstner_2015, title={Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence}, volume={34}, DOI={10.1109/jlt.2015.2502431}, number={3}, journal={Journal of Lightwave Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Hammer, Manfred and Hildebrandt, Andre and Förstner, Jens}, year={2015}, pages={997–1005} }' chicago: 'Hammer, Manfred, Andre Hildebrandt, and Jens Förstner. “Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence.” Journal of Lightwave Technology 34, no. 3 (2015): 997–1005. https://doi.org/10.1109/jlt.2015.2502431.' ieee: M. Hammer, A. Hildebrandt, and J. Förstner, “Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence,” Journal of Lightwave Technology, vol. 34, no. 3, pp. 997–1005, 2015. mla: Hammer, Manfred, et al. “Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence.” Journal of Lightwave Technology, vol. 34, no. 3, Institute of Electrical and Electronics Engineers (IEEE), 2015, pp. 997–1005, doi:10.1109/jlt.2015.2502431. short: M. Hammer, A. Hildebrandt, J. Förstner, Journal of Lightwave Technology 34 (2015) 997–1005. date_created: 2018-08-08T10:34:34Z date_updated: 2022-01-06T06:59:44Z ddc: - '530' department: - _id: '61' doi: 10.1109/jlt.2015.2502431 file: - access_level: local content_type: application/pdf creator: hclaudia date_created: 2018-08-08T10:37:19Z date_updated: 2018-09-03T14:43:26Z file_id: '3848' file_name: 2016 Hammer,Hildebrandt,Förstner_Full resonant transmission of semi-guided planar waves.pdf file_size: 606723 relation: main_file file_date_updated: 2018-09-03T14:43:26Z has_accepted_license: '1' intvolume: ' 34' issue: '3' keyword: - tet_topic_waveguide language: - iso: eng page: 997-1005 publication: Journal of Lightwave Technology publication_identifier: issn: - 0733-8724 - 1558-2213 publication_status: published publisher: Institute of Electrical and Electronics Engineers (IEEE) status: public title: Full Resonant Transmission of Semiguided Planar Waves Through Slab Waveguide Steps at Oblique Incidence type: journal_article user_id: '158' volume: 34 year: '2015' ... --- _id: '3894' abstract: - lang: eng text: "We show how to optically connect guiding layers at different elevations in a 3-D integrated photonic circuit. Transfer of\r\noptical power carried by planar, semi-guided waves is possible without reflections or radiation losses, and over large\r\nvertical distances. This functionality is realized through simple step-like folds of high-contrast dielectric slab waveguides, in combination with oblique wave incidence, and fulfilling a resonance condition. Radiation losses vanish, and polarization conversion is suppressed for TE wave incidence beyond certain critical angles. This can be understood by fundamental arguments resting on a version of Snell’s law. The two 90° corners of a step act as identical partial reflectors in a Fabry–Perot-like resonator setup. By selecting the step height, i.e., the distance between the reflectors, one realizes resonant states with full transmission. Rigorous quasi-analytical simulations\r\nfor typical silicon/silica parameters demonstrate the functioning. Combinations of several step junctions can lead\r\nto other types of optical on-chip connects, e.g., U-turn- or bridge-like configurations." article_type: original author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 citation: ama: Hammer M, Hildebrandt A, Förstner J. How planar optical waves can be made to climb dielectric steps. Optics Letters. 2015;40(16):3711-3714. doi:10.1364/ol.40.003711 apa: Hammer, M., Hildebrandt, A., & Förstner, J. (2015). How planar optical waves can be made to climb dielectric steps. Optics Letters, 40(16), 3711–3714. https://doi.org/10.1364/ol.40.003711 bibtex: '@article{Hammer_Hildebrandt_Förstner_2015, title={How planar optical waves can be made to climb dielectric steps}, volume={40}, DOI={10.1364/ol.40.003711}, number={16}, journal={Optics Letters}, publisher={The Optical Society}, author={Hammer, Manfred and Hildebrandt, Andre and Förstner, Jens}, year={2015}, pages={3711–3714} }' chicago: 'Hammer, Manfred, Andre Hildebrandt, and Jens Förstner. “How Planar Optical Waves Can Be Made to Climb Dielectric Steps.” Optics Letters 40, no. 16 (2015): 3711–14. https://doi.org/10.1364/ol.40.003711.' ieee: M. Hammer, A. Hildebrandt, and J. Förstner, “How planar optical waves can be made to climb dielectric steps,” Optics Letters, vol. 40, no. 16, pp. 3711–3714, 2015. mla: Hammer, Manfred, et al. “How Planar Optical Waves Can Be Made to Climb Dielectric Steps.” Optics Letters, vol. 40, no. 16, The Optical Society, 2015, pp. 3711–14, doi:10.1364/ol.40.003711. short: M. Hammer, A. Hildebrandt, J. Förstner, Optics Letters 40 (2015) 3711–3714. date_created: 2018-08-13T09:39:06Z date_updated: 2022-01-06T06:59:51Z ddc: - '530' department: - _id: '61' doi: 10.1364/ol.40.003711 file: - access_level: open_access content_type: application/pdf creator: hclaudia date_created: 2018-08-13T09:41:32Z date_updated: 2018-09-04T19:35:48Z file_id: '3895' file_name: 2015-07 Hammer,Hildebrandt,Förstner_How planar optical waves can be made to climb dielectric steps_Optics Letter.pdf file_size: 1504149 relation: main_file file_date_updated: 2018-09-04T19:35:48Z has_accepted_license: '1' intvolume: ' 40' issue: '16' keyword: - tet_topic_waveguide language: - iso: eng oa: '1' page: 3711-3714 publication: Optics Letters publication_identifier: issn: - 0146-9592 - 1539-4794 publication_status: published publisher: The Optical Society status: public title: How planar optical waves can be made to climb dielectric steps type: journal_article urn: '38942' user_id: '158' volume: 40 year: '2015' ... --- _id: '3890' abstract: - lang: eng text: "The incidenceofthin-film-guided, in-planeunguidedwavesatobliqueanglesonstraightdiscontinuities of dielectricslabwaveguides,anearlyproblemofintegratedoptics,isbeingre-considered.The3-D frequencydomainMaxwellequationsreducetoaparametrizedinhomogeneousvectorialproblemona\r\n2-D computationaldomain,withtransparent-influx boundaryconditions.Weproposearigorousvec-\r\ntorial solverbasedonsimultaneousexpansionsintopolarizedlocalslabeigenmodesalongthetwo\r\northogonal crosssectioncoordinates(quadridirectionaleigenmodepropagationQUEP).Thequasi-ana-\r\nlytical schemeisapplicabletoconfigurations with — in principle — arbitrary crosssectiongeometries.\r\nExamples forahigh-contrastfacetofanasymmetricslabwaveguide,forthelateralexcitationofa\r\nchannel waveguide,andforastepdiscontinuitybetweenslabwaveguidesofdifferentthicknessesare\r\ndiscussed." article_type: original author: - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: 'Hammer M. Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver. Optics Communications. 2014;338:447-456. doi:10.1016/j.optcom.2014.09.087' apa: 'Hammer, M. (2014). Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver. Optics Communications, 338, 447–456. https://doi.org/10.1016/j.optcom.2014.09.087' bibtex: '@article{Hammer_2014, title={Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver}, volume={338}, DOI={10.1016/j.optcom.2014.09.087}, journal={Optics Communications}, publisher={Elsevier BV}, author={Hammer, Manfred}, year={2014}, pages={447–456} }' chicago: 'Hammer, Manfred. “Oblique Incidence of Semi-Guided Waves on Rectangular Slab Waveguide Discontinuities: A Vectorial QUEP Solver.” Optics Communications 338 (2014): 447–56. https://doi.org/10.1016/j.optcom.2014.09.087.' ieee: 'M. Hammer, “Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver,” Optics Communications, vol. 338, pp. 447–456, 2014.' mla: 'Hammer, Manfred. “Oblique Incidence of Semi-Guided Waves on Rectangular Slab Waveguide Discontinuities: A Vectorial QUEP Solver.” Optics Communications, vol. 338, Elsevier BV, 2014, pp. 447–56, doi:10.1016/j.optcom.2014.09.087.' short: M. Hammer, Optics Communications 338 (2014) 447–456. date_created: 2018-08-13T09:28:01Z date_updated: 2022-01-06T06:59:50Z ddc: - '530' department: - _id: '61' doi: 10.1016/j.optcom.2014.09.087 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-13T09:29:14Z date_updated: 2018-08-13T09:29:14Z file_id: '3891' file_name: 2015 Hammer_Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities_A vectorial QUEP solver_Optics communications.pdf file_size: 1872449 relation: main_file success: 1 file_date_updated: 2018-08-13T09:29:14Z has_accepted_license: '1' intvolume: ' 338' keyword: - tet_topic_waveguide - tet_topic_numerics language: - iso: eng page: 447-456 publication: Optics Communications publication_identifier: issn: - 0030-4018 publication_status: published publisher: Elsevier BV status: public title: 'Oblique incidence of semi-guided waves on rectangular slab waveguide discontinuities: A vectorial QUEP solver' type: journal_article user_id: '55706' volume: 338 year: '2014' ... --- _id: '3937' abstract: - lang: eng text: "The relevance of our definition for sensitivity in refractometric sensing, being the relative change in the transmittance\r\nof a certain output channel of an optical device over the change in the refractive index of the probed\r\nmaterial, is discussed. It is compared to one based on spectral shift per refractive index unit change. Further, there\r\nis discussion on how group delay and sensitivity are interrelated and can be converted into each other and which\r\nphysical quantities are relevant for high sensitivity. As a by-product of the theory presented, a general expression\r\nrelating group delay and the ratio of the time-averaged optical energy and the input power is presented." article_number: 1561-1567 article_type: original author: - first_name: Hugo J. W. M. full_name: Hoekstra, Hugo J. W. M. last_name: Hoekstra - first_name: Manfred full_name: Hammer, Manfred id: '48077' last_name: Hammer orcid: 0000-0002-6331-9348 citation: ama: Hoekstra HJWM, Hammer M. General relation for group delay and the relevance of group delay for refractometric sensing. Journal of the Optical Society of America B. 2014;31(7). doi:10.1364/josab.31.001561 apa: Hoekstra, H. J. W. M., & Hammer, M. (2014). General relation for group delay and the relevance of group delay for refractometric sensing. Journal of the Optical Society of America B, 31(7). https://doi.org/10.1364/josab.31.001561 bibtex: '@article{Hoekstra_Hammer_2014, title={General relation for group delay and the relevance of group delay for refractometric sensing}, volume={31}, DOI={10.1364/josab.31.001561}, number={71561–1567}, journal={Journal of the Optical Society of America B}, publisher={The Optical Society}, author={Hoekstra, Hugo J. W. M. and Hammer, Manfred}, year={2014} }' chicago: Hoekstra, Hugo J. W. M., and Manfred Hammer. “General Relation for Group Delay and the Relevance of Group Delay for Refractometric Sensing.” Journal of the Optical Society of America B 31, no. 7 (2014). https://doi.org/10.1364/josab.31.001561. ieee: H. J. W. M. Hoekstra and M. Hammer, “General relation for group delay and the relevance of group delay for refractometric sensing,” Journal of the Optical Society of America B, vol. 31, no. 7, 2014. mla: Hoekstra, Hugo J. W. M., and Manfred Hammer. “General Relation for Group Delay and the Relevance of Group Delay for Refractometric Sensing.” Journal of the Optical Society of America B, vol. 31, no. 7, 1561–1567, The Optical Society, 2014, doi:10.1364/josab.31.001561. short: H.J.W.M. Hoekstra, M. Hammer, Journal of the Optical Society of America B 31 (2014). date_created: 2018-08-20T09:59:35Z date_updated: 2022-01-06T06:59:57Z ddc: - '530' department: - _id: '61' doi: 10.1364/josab.31.001561 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-20T10:00:33Z date_updated: 2018-08-20T10:00:33Z file_id: '3938' file_name: 2014_07_Hoekstra,Hammer_General relation for group delay and the relevance of group delay for refractometric sensing_OSA.pdf file_size: 364221 relation: main_file success: 1 file_date_updated: 2018-08-20T10:00:33Z has_accepted_license: '1' intvolume: ' 31' issue: '7' keyword: - tet_topic_waveguide language: - iso: eng 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: General relation for group delay and the relevance of group delay for refractometric sensing type: journal_article user_id: '55706' volume: 31 year: '2014' ...