[{"title":"Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles","date_created":"2020-10-24T08:03:58Z","year":"2020","language":[{"iso":"eng"}],"keyword":["tet_topic_waveguides"],"ddc":["530"],"file":[{"file_size":2212769,"file_name":"2020-10 Hammer - OQE - Hybrid Coupled Mode Modelling Dielectric Tube.pdf","file_id":"20190","access_level":"closed","date_updated":"2020-10-24T08:11:40Z","creator":"fossie","date_created":"2020-10-24T08:11:40Z","success":1,"relation":"main_file","content_type":"application/pdf"}],"abstract":[{"text":"A dielectric step-index optical fiber with tube-like profile is considered, being positioned with a small gap on top of a dielectric slab waveguide. We propose a 2.5-D hybrid analytical/numerical coupled mode model for the evanescent excitation of the tube through semi-guided waves propagating in the slab at oblique angles. The model combines the directional polarized modes supported by the slab with analytic solutions for the TE-, TM-, and orbital-angular-momentum (OAM) modes of the tube-shaped fiber. Implementational details of the scheme are discussed, complemented by finite-element simulations for verification purposes. Our results include configurations with resonant in-fiber excitation of OAM modes with large orbital angular momentum and strong field enhancement.","lang":"eng"}],"publication":"Optical and Quantum Electronics","doi":"10.1007/s11082-020-02595-z","volume":52,"author":[{"last_name":"Hammer","orcid":"0000-0002-6331-9348","full_name":"Hammer, Manfred","id":"48077","first_name":"Manfred"},{"full_name":"Ebers, Lena","id":"40428","last_name":"Ebers","first_name":"Lena"},{"first_name":"Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens"}],"date_updated":"2022-01-06T06:54:22Z","intvolume":"        52","citation":{"chicago":"Hammer, Manfred, Lena Ebers, and Jens Förstner. “Hybrid Coupled Mode Modelling of the Evanescent Excitation of a Dielectric Tube by Semi-Guided Waves at Oblique Angles.” <i>Optical and Quantum Electronics</i> 52 (2020). <a href=\"https://doi.org/10.1007/s11082-020-02595-z\">https://doi.org/10.1007/s11082-020-02595-z</a>.","ieee":"M. Hammer, L. Ebers, and J. Förstner, “Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles,” <i>Optical and Quantum Electronics</i>, vol. 52, 2020.","ama":"Hammer M, Ebers L, Förstner J. Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles. <i>Optical and Quantum Electronics</i>. 2020;52. doi:<a href=\"https://doi.org/10.1007/s11082-020-02595-z\">10.1007/s11082-020-02595-z</a>","apa":"Hammer, M., Ebers, L., &#38; Förstner, J. (2020). Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles. <i>Optical and Quantum Electronics</i>, <i>52</i>. <a href=\"https://doi.org/10.1007/s11082-020-02595-z\">https://doi.org/10.1007/s11082-020-02595-z</a>","bibtex":"@article{Hammer_Ebers_Förstner_2020, title={Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles}, volume={52}, DOI={<a href=\"https://doi.org/10.1007/s11082-020-02595-z\">10.1007/s11082-020-02595-z</a>}, number={472}, journal={Optical and Quantum Electronics}, author={Hammer, Manfred and Ebers, Lena and Förstner, Jens}, year={2020} }","mla":"Hammer, Manfred, et al. “Hybrid Coupled Mode Modelling of the Evanescent Excitation of a Dielectric Tube by Semi-Guided Waves at Oblique Angles.” <i>Optical and Quantum Electronics</i>, vol. 52, 472, 2020, doi:<a href=\"https://doi.org/10.1007/s11082-020-02595-z\">10.1007/s11082-020-02595-z</a>.","short":"M. Hammer, L. Ebers, J. Förstner, Optical and Quantum Electronics 52 (2020)."},"publication_identifier":{"issn":["0306-8919","1572-817X"]},"has_accepted_license":"1","publication_status":"published","file_date_updated":"2020-10-24T08:11:40Z","article_number":"472","department":[{"_id":"61"},{"_id":"230"},{"_id":"429"}],"user_id":"158","_id":"20189","project":[{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 - Subproject C5","_id":"75"},{"_id":"53","name":"TRR 142"}],"status":"public","type":"journal_article"},{"author":[{"last_name":"Ebers","full_name":"Ebers, Lena","id":"40428","first_name":"Lena"},{"last_name":"Hammer","orcid":"0000-0002-6331-9348","full_name":"Hammer, Manfred","id":"48077","first_name":"Manfred"},{"id":"158","full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","first_name":"Jens"}],"volume":49,"date_updated":"2022-01-06T06:59:39Z","doi":"10.1007/s11082-017-1011-x","publication_status":"published","publication_identifier":{"issn":["0306-8919","1572-817X"]},"has_accepted_license":"1","citation":{"apa":"Ebers, L., Hammer, M., &#38; Förstner, J. (2017). Spiral modes supported by circular dielectric tubes and tube segments. <i>Optical and Quantum Electronics</i>, <i>49</i>(4), 49:176. <a href=\"https://doi.org/10.1007/s11082-017-1011-x\">https://doi.org/10.1007/s11082-017-1011-x</a>","short":"L. Ebers, M. Hammer, J. Förstner, Optical and Quantum Electronics 49 (2017) 49:176.","bibtex":"@article{Ebers_Hammer_Förstner_2017, title={Spiral modes supported by circular dielectric tubes and tube segments}, volume={49}, DOI={<a href=\"https://doi.org/10.1007/s11082-017-1011-x\">10.1007/s11082-017-1011-x</a>}, number={4}, journal={Optical and Quantum Electronics}, publisher={Springer Nature}, author={Ebers, Lena and Hammer, Manfred and Förstner, Jens}, year={2017}, pages={49:176} }","mla":"Ebers, Lena, et al. “Spiral Modes Supported by Circular Dielectric Tubes and Tube Segments.” <i>Optical and Quantum Electronics</i>, vol. 49, no. 4, Springer Nature, 2017, p. 49:176, doi:<a href=\"https://doi.org/10.1007/s11082-017-1011-x\">10.1007/s11082-017-1011-x</a>.","ama":"Ebers L, Hammer M, Förstner J. Spiral modes supported by circular dielectric tubes and tube segments. <i>Optical and Quantum Electronics</i>. 2017;49(4):49:176. doi:<a href=\"https://doi.org/10.1007/s11082-017-1011-x\">10.1007/s11082-017-1011-x</a>","chicago":"Ebers, Lena, Manfred Hammer, and Jens Förstner. “Spiral Modes Supported by Circular Dielectric Tubes and Tube Segments.” <i>Optical and Quantum Electronics</i> 49, no. 4 (2017): 49:176. <a href=\"https://doi.org/10.1007/s11082-017-1011-x\">https://doi.org/10.1007/s11082-017-1011-x</a>.","ieee":"L. Ebers, M. Hammer, and J. Förstner, “Spiral modes supported by circular dielectric tubes and tube segments,” <i>Optical and Quantum Electronics</i>, vol. 49, no. 4, p. 49:176, 2017."},"page":"49:176","intvolume":"        49","user_id":"158","department":[{"_id":"61"}],"project":[{"name":"TRR 142","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142 - Subproject A5","_id":"62"}],"_id":"3830","file_date_updated":"2022-01-06T06:59:38Z","article_type":"original","type":"journal_article","status":"public","urn":"38308","date_created":"2018-08-07T09:52:20Z","publisher":"Springer Nature","title":"Spiral modes supported by circular dielectric tubes and tube segments","issue":"4","year":"2017","language":[{"iso":"eng"}],"ddc":["530"],"keyword":["tet_topic_waveguide"],"publication":"Optical and Quantum Electronics","file":[{"date_updated":"2022-01-06T06:59:38Z","creator":"hclaudia","date_created":"2018-08-07T09:56:27Z","file_size":2379736,"access_level":"request","file_id":"3831","file_name":"2017-03 Ebers, Hammer_Spiral modes supported by circular dielectric tubes and tube segments.pdf","content_type":"application/pdf","relation":"main_file"}],"abstract":[{"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.","lang":"eng"}]}]