Ultra-compact wavelength-tunable quantum-dot laser with silicon-photonics double ring filter

Tomohiro Kita, Naokatsu Yamamoto, Tetsuya Kawanishi, Hirohito Yamada

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


Compact, wavelength-tunable light sources are desired for the enhancement of information communication technology and bio-imaging applications. We propose a compact, wavelength-tunable laser diode with a wide wavelength-tunable range around 1230nm consisting of a quantum-dot optical amplifier and a silicon photonic tunable filter. High-quality InAs quantum dots grown with the sandwiched sub-nano separator technique were used as the optical gain medium. The wavelength-tunable filter was constructed with ring resonators fabricated using silicon photonics. The single-mode laser oscillation was demonstrated with a 28.5-nm wavelength-tunable range.

Original languageEnglish
Article number062701
JournalApplied Physics Express
Issue number6
Publication statusPublished - 2015 Jun 1


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