| DOI | Trouver le DOI : https://doi.org/10.1049/el.2012.0591 |
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| Auteur | Rechercher : Velasco, A. V.; Rechercher : Bock, P. J.1; Rechercher : Cheben, P.1Identifiant ORCID : https://orcid.org/0000-0003-4232-9130; Rechercher : Calvo, M. L.; Rechercher : Schmid, J. H.1; Rechercher : Lapointe, J.1; Rechercher : Xu, D.-X.1; Rechercher : Janz, S.1; Rechercher : Delâge, A.1 |
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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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| Résumé | The fabrication and experimental characterisation of a two-stage band-pass filter based on curved waveguide sidewall gratings is reported for the silicon-on-insulator platform. At each cascaded filtering stage, the spectral components of the input signal are dispersed by the diffraction grating formed in the sidewall of a silicon strip waveguide. Different wavelengths are focused onto different positions along the Rowland circle and the filter central wavelength is selected by a specific receiver waveguide. By using two consecutive filtering stages, both the filter passband profile and the stopband rejection ratio are substantially increased. The grating is apodised and chirped to ensure a constant effective index along the grating length to minimise phase distortions. Blazed geometry is used to maximise the diffraction efficiency to the −1st order. The device was fabricated with electron beam lithography and reactive ion etching using a single etch step. A bandwidth of 6.2 nm was measured near 1590 nm for the fabricated filter, with a roll-off of 4 dB/nm at the passband edge, and a stopband rejection of 40 dB. |
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| Date de publication | 2012-06-07 |
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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 | 21268969 |
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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 | 25b39436-15d1-4c80-9e9e-1425999a8689 |
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| Enregistrement créé | 2013-11-28 |
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| Enregistrement modifié | 2020-04-21 |
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