TY - JOUR
T1 - 1.3-μm wavelength-tunable quantum-dot optical frequency comb generator integrated with absorptive optical attenuator
AU - Yamamoto, Naokatsu
AU - Akahane, Kouichi
AU - Kawanishi, Tetsuya
AU - Katouf, Redouane
AU - Sotobayashi, Hideyuki
AU - Yoshioka, Yuki
AU - Takai, Hiroshi
PY - 2012/2
Y1 - 2012/2
N2 - The generation of multiple-wavelength fine peaks in the 1.3-μm waveband with wavelength tunability and powercontrollability is successfully demonstrated using a quantum-dot optical frequency comb laser (QD-CML) integrated with an absorptive optical attenuator by employing a broadband optical injection seeding technique. High-quality, high-density InAs/InGaAs QD optical gain media are fabricated on a GaAs substrate using a sandwiched sub-nano separator (SSNS) growth technique. A wide wavelength tuning range between 1.274 and 1.302 μm was achieved at a low gain current of 50 mA. In addition, a high extinction ratio of -20 dB at a low attenuator voltage (-2.5 V) was achieved in the fabricated QD-CML.
AB - The generation of multiple-wavelength fine peaks in the 1.3-μm waveband with wavelength tunability and powercontrollability is successfully demonstrated using a quantum-dot optical frequency comb laser (QD-CML) integrated with an absorptive optical attenuator by employing a broadband optical injection seeding technique. High-quality, high-density InAs/InGaAs QD optical gain media are fabricated on a GaAs substrate using a sandwiched sub-nano separator (SSNS) growth technique. A wide wavelength tuning range between 1.274 and 1.302 μm was achieved at a low gain current of 50 mA. In addition, a high extinction ratio of -20 dB at a low attenuator voltage (-2.5 V) was achieved in the fabricated QD-CML.
KW - Broadband optical gain
KW - Infrared light source
KW - Laser
KW - Nanostructure
KW - Quantum dot
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U2 - 10.1002/pssc.201100255
DO - 10.1002/pssc.201100255
M3 - Article
AN - SCOPUS:84856196746
SN - 1862-6351
VL - 9
SP - 282
EP - 285
JO - Physica Status Solidi (C) Current Topics in Solid State Physics
JF - Physica Status Solidi (C) Current Topics in Solid State Physics
IS - 2
ER -