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

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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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
Issue number11
Publication statusPublished - 2018 Nov 1

ASJC Scopus subject areas

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


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