title: Narrow-line-width 1.31-μm wavelength tunable quantum dot laser using sandwiched sub-nano separator growth technique.
abstract: 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.
authors.affiliation: National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei, Tokyo 184-8795, Japan. naokatsu@nict.go.jp
authors.forename: Naokatsu
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Kouichi
authors.initials: K
authors.lastname: Akahane
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Kawanishi
authors.forename: Yu
authors.initials: Y
authors.lastname: Omigawa
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Sotobayashi
authors.forename: Yuki
authors.initials: Y
authors.lastname: Yoshioka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takai