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

Alexandre D. Simard, Michael J. Strain, Laura Meriggi, Marc Sorel, Sophie LaRochelle

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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.

Original languageEnglish
Pages (from-to)736-739
Number of pages4
JournalOptics Letters
Volume40
Issue number5
Early online date20 Feb 2015
DOIs
Publication statusPublished - 1 Mar 2015

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Keywords

  • bandpass filters
  • Bragg grating
  • waveguides

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