Membrane distributed-reflector laser integrated with SiOx-based spot-size converter on Si substrate

Hidetaka Nishi, Takuro Fujii, Koji Takeda, Koichi Hasebe, Takaaki Kakitsuka, Tai Tsuchizawa, Tsuyoshi Yamamoto, Koji Yamada, Shinji Matsuo

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


We demonstrate monolithic integration of a 50-μm-long-cavity membrane distributed-reflector laser with a spot-size converter, consisting of a tapered InP wire waveguide and an SiOx waveguide, on SiO2/Si substrate. The device exhibits 9.4-GHz/mA0.5 modulation efficiency with a 2.2-dB fiber coupling loss. We demonstrate 25.8-Gbit/s direct modulation with a bias current of 2.5 mA, resulting in a low energy cost of 132 fJ/bit.

Original languageEnglish
Pages (from-to)18346-18352
Number of pages7
JournalOptics Express
Issue number16
Publication statusPublished - 2016 Aug 8
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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