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Uniformly spaced λ/4-shifted Bragg grating array with wafer-scale CMOS-compatible process.

08:00 EDT 15th October 2013 | BioPortfolio

Summary of "Uniformly spaced λ/4-shifted Bragg grating array with wafer-scale CMOS-compatible process."

We report on an integrated λ/4-shifted Bragg grating array using a wafer-scale complementary metal-oxide semiconductor (CMOS) compatible process with silicon-nitride waveguides. A sidewall grating was used to simplify the fabrication process, and a sampled Bragg grating with equivalent phase-shift structure was employed to achieve an accurate λ/4 phase shift. A four-channel λ/4-shifted Bragg grating array with highly uniform channel spacing was demonstrated with a measured channel spacing variation below 10 pm (1.25 GHz). The high channel-spacing uniformity and the CMOS-compatibility of the demonstrated device hold promise for integrated distributed feedback laser arrays for various silicon photonic applications.

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This article was published in the following journal.

Name: Optics letters
ISSN: 1539-4794
Pages: 4002-4

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