Bandpass integrated Bragg gratings in silicon-on-insulator with well-controlled amplitude and phase responses

Simard, Alexandre D. and Strain, Michael J. and Meriggi, Laura and Sorel, Marc and LaRochelle, Sophie (2015) Bandpass integrated Bragg gratings in silicon-on-insulator with well-controlled amplitude and phase responses. Optics Letters, 40 (5). pp. 736-739. ISSN 0146-9592 (https://doi.org/10.1364/OL.40.000736)

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Abstract

Bandpass filters with square shape amplitude responses and well-controlled dispersion characteristics are achieved by accurate apodization of Bragg grating structures in silicon-on-insulator waveguides. For these devices, precise tailoring of their frequency response typically requires low coupling coefficients and relatively long on-chip propagation lengths. These challenges are addressed by implementing apodization by phase-modulation and using wider strip waveguides to reduce phase noise. This design approach is demonstrated with a dispersion-less narrowband filter and a chirped bandpass filter.

ORCID iDs

Simard, Alexandre D., Strain, Michael J. ORCID logoORCID: https://orcid.org/0000-0002-9752-3144, Meriggi, Laura, Sorel, Marc and LaRochelle, Sophie;