Compact narrow-linewidth optical negative feedback laser with Si optical filter

Konosuke Aoyama, Shuhei Kobayashi, Masashi Wada, Nobuhide Yokota, Tomohiro Kita, Hiroshi Yasaka

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    Abstract

    A compact narrow-linewidth semiconductor laser is demonstrated by hybridly integrating an optical filter constructed from Si waveguides with a single-mode semiconductor laser, whose spectral linewidth is narrowed through optical negative feedback. We design the optimum structure of a reflective ring filter for an optical negative feedback laser, and a narrow spectral linewidth of 160 kHz is realized by the hybridly integrated laser source whose effective device length is less than 1.5 mm.

    Original languageEnglish
    Article number112703
    JournalApplied Physics Express
    Volume11
    Issue number11
    DOIs
    Publication statusPublished - 2018 Nov 1

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    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)

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