| DOI | Trouver le DOI : https://doi.org/10.1364/OL.37.003663 |
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| Auteur | Rechercher : Alonso-Ramos, C.; Rechercher : Zavargo-Peche, L.; Rechercher : Ortega-Moñux, A.; Rechercher : Halir, R.; Rechercher : Molina-Fernández, I.; Rechercher : Cheben, P.1Identifiant ORCID : https://orcid.org/0000-0003-4232-9130 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de l'information et des communications
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| Format | Texte, Article |
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| Sujet | coupling efficiency; directivity; dual-polarizations; duty cycles; fiber chip coupling; grating couplers; grating pitch; high reflectivity; oxide thickness; polarization dependence; polarization-independent; practical implementation; selective removal; Si substrates; silicon-on-insulator waveguide; silicon rib waveguides; waveguides; polarization |
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| Résumé | Grating couplers are a promising approach to implement efficient fiber-chip coupling. However, their strong polarization dependence makes dual-polarization operation challenging. In this Letter we propose, for the first time, a polarization-independent grating coupler for thick rib silicon-on-insulator (SOI) waveguides. Coupling efficiency is optimized by designing the grating pitch and duty cycle, without varying the bottom oxide thickness, which significantly simplifies practical implementation. Directivity of the grating coupler is enhanced by a high reflectivity layer under the bottom oxide after the selective removal of the Si substrate. Dual-polarization coupling efficiency of -2.8 dB is shown. |
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| Date de publication | 2012-08-29 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270153 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 38b28ac8-c949-48f0-b90d-42b3f153c4f4 |
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| Enregistrement créé | 2014-01-06 |
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| Enregistrement modifié | 2020-04-21 |
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