Long external cavity Si photonic wavelength tunable laser diode

Tomohiro Kita*, Keita Nemoto, Hirohito Yamada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


We fabricated wavelength-tunable laser diodes with external cavity consist of Si photonic wire waveguide ring resonators. About 51.5 nm wavelength tuning operation, which covers the entire L-band of the optical communication wavelength range, was obtained. The cavity length dependence of the spectral line width was verified to obtain narrower spectral linewidth. The observed spectral linewidth of 3.78mm long cavity and 8.19mm long cavity are 131.0 and 64.8 kHz, respectively. The advantage of long external cavity to design the narrow spectral linewidth Si photonic wavelength tunable laser diode was confirmed.

Original languageEnglish
Article number04EG04
JournalJapanese journal of applied physics
Issue number4 SPEC. ISSUE
Publication statusPublished - 2014 Apr
Externally publishedYes

ASJC Scopus subject areas

  • General Engineering
  • General Physics and Astronomy


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