Narrowband Bragg filters based on subwavelength grating waveguides for silicon photonic sensing

Par Conseil national de recherches du Canada

Téléchargement	Voir la version finale : Narrowband Bragg filters based on subwavelength grating waveguides for silicon photonic sensing (PDF, 3.3 Mio)
DOI	Trouver le DOI : https://doi.org/10.1364/OE.404364
Auteur	Rechercher : Pérez-Armenta, Carlos; Rechercher : Ortega-Moñux, Alejandro; Rechercher : Čtyroký, Jiří Identifiant ORCID : https://orcid.org/0000-0002-4483-1311; Rechercher : Cheben, Pavel¹Identifiant ORCID : https://orcid.org/0000-0003-4232-9130; Rechercher : Schmid, Jens H.¹; Rechercher : Halir, Robert; Rechercher : Molina-Fernández, Íñigo Identifiant ORCID : https://orcid.org/0000-0001-9596-4117; Rechercher : Wangüemert-Pérez, J. Gonzalo Identifiant ORCID : https://orcid.org/0000-0002-9201-4463
Affiliation	Conseil national de recherches du Canada. Électronique et photonique avancées
Format	Texte, Article
Résumé	Subwavelength grating (SWG)waveguides have been shown to provide enhanced lightmatter interaction resulting in superior sensitivity in integrated photonics sensors. Narrowband integrated optical filters can be made by combining SWG waveguides with evanescently coupled Bragg gratings. In this paper, we assess the sensing capabilities of this novel filtering component with rigorous electromagnetic simulations. Our design is optimized for an operating wavelength of 1310 nm to benefit from lower water absorption and achieve narrower bandwidths than at the conventional wavelength of 1550 nm. Results show that the sensor achieves a sensitivity of 507 nm/RIU and a quality factor of 4.9 × 10⁴, over a large dynamic range circumventing the free spectral range limit of conventional devices. Furthermore, the intrinsic limit of detection, 5.1 × 10⁻⁵ RIU constitutes a 10-fold enhancement compared to state-of-the-art resonantwaveguide sensors.
Date de publication	2020
Maison d’édition	Optical Society of America
Licence	Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	Optics Express 28, nº 25, 404364 : 37971–37985.
Langue	anglais
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	0c804ef0-058b-4363-99e5-1f95af3dc617
Enregistrement créé	2021-05-14
Enregistrement modifié	2021-05-17

Date de modification :: 2024-07-17