Silicon photonic hybrid ring-filter external cavity wavelength tunable lasers

Naoki Kobayashi, Kenji Sato, Masahiko Namiwaka, Keisuke Yamamoto, Shinya Watanabe, Tomohiro Kita, Hirohito Yamada, Hiroyuki Yamazaki

Research output: Contribution to journalArticlepeer-review

150 Citations (Scopus)


Si-photonic hybrid ring external cavity wavelength tunable lasers by passive alignment techniques with more than 100-mW fiber-coupled power and linewidth narrower than 15 kHz along the whole C-band are demonstrated. These attractive performances are achieved due to very low loss Si-wire waveguides, of which loss is lower than 0.5 dB/cm. Obtained results show excellent features of Si-photonics toward commercial products.

Original languageEnglish
Article number6994779
Pages (from-to)1241-1246
Number of pages6
JournalJournal of Lightwave Technology
Issue number6
Publication statusPublished - 2015 Mar 15
Externally publishedYes


  • booster SOA
  • digital coherent system
  • external cavity laser
  • passive alignment
  • ring resonator
  • semiconductor optical amplifier (SOA)
  • silicon photonics
  • silicon wire-waveguide
  • wavelength tunable laser

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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