Narrow-line-width 1.31-μm wavelength tunable quantum dot laser using sandwiched sub-nano separator growth technique

Naokatsu Yamamoto, Kouichi Akahane, Tetsuya Kawanishi, Yu Omigawa, Hideyuki Sotobayashi, Yuki Yoshioka, Hiroshi Takai

Research output: Contribution to journalArticle

12 Citations (Scopus)


A wide wavelength tunable quantum dot (QD) external cavity laser operating in the 1.31-μm waveband with a narrow line-width is successfully demonstrated. A high-density, high-quality InAs/InGaAs QD optical gain medium for the 1.31-μm waveband was obtained using a sandwiched sub-nano separator growth technique. A wide wavelength tunability of 1.265—1.321 μm and a narrow line-width of 210 kHz were successfully achieved using a compact and robust external cavity system constructed with multiple optical band-pass and etalon filters for active optical mode selection. The laser also achieved an error-free 10-Gb/s photonic data transmission over an 11.4-km-long holey fiber.

Original languageEnglish
Pages (from-to)B636-B644
JournalOptics Express
Issue number26
Publication statusPublished - 2011 Dec 12


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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