Presentation 2017-10-27
1-THz bandwidth, 10-GHz spaced optical frequency combs generated from all-optical-gate-based semiconductor mode-locked lasers
Makoto Takeshita, Kodai Ishida, Kengo Okano, Yoshiyasu Ueno,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Optical frequency comb source is expected to contribute for improving performance of a rarefied-gas sensing, and its broad optical frequency bandwidth is necessary to detect multiple molecular species simultaneously. All-optical-gate-type mode-locked laser has several features: wavelength and repetition rate tunability, seed-light-determined spectral line-width, etc. However, 20 dB bandwidth of the output frequency comb was about 600 GHz typically. In this work, we achieved broadening bandwidth to 1.2 THz at -20 dB by shortening a gating time to 0.6 ps. Moreover, FWHM of the output optical pulses was achieved shorter than 1 ps with external dispersion compensation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Mode-locked laser / Semiconductor optical amplifier / Optical frequency comb / Gas molecules sensor
Paper # OCS2017-55,OPE2017-87,LQE2017-60
Date of Issue 2017-10-19 (OCS, OPE, LQE)

Conference Information
Committee OCS / OPE / LQE
Conference Date 2017/10/26(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Josaien, Sakuranobaba
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Itsuro Morita(KDDI Research) / Kazutoshi Kato(Kyushu Univ.) / Tsuyoshi Yamamoto(Fujitsu Labs.)
Vice Chair / Kouki Sato(Furukawa Electric Industries) / Kiichi Hamamoto(Kyusyu Univ.)
Secretary (Sumitomo Electric Industries) / Kouki Sato(NTT) / Kiichi Hamamoto(NTT)
Assistant / Takuo Tanemura(Univ. of Tokyo) / Naokatsu Yamamoto(NICT) / Yasumasa Kawakita(Furukawa Electric Industries) / Naoki Fujiwara(NTT)

Paper Information
Registration To Technical Committee on Optical Communication Systems / Technical Committee on OptoElectronics / Technical Committee on Lasers and Quantum Electronics
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) 1-THz bandwidth, 10-GHz spaced optical frequency combs generated from all-optical-gate-based semiconductor mode-locked lasers
Sub Title (in English)
Keyword(1) Mode-locked laser
Keyword(2) Semiconductor optical amplifier
Keyword(3) Optical frequency comb
Keyword(4) Gas molecules sensor
1st Author's Name Makoto Takeshita
1st Author's Affiliation University of Elrctro-Communications(UEC)
2nd Author's Name Kodai Ishida
2nd Author's Affiliation University of Elrctro-Communications(UEC)
3rd Author's Name Kengo Okano
3rd Author's Affiliation University of Elrctro-Communications(UEC)
4th Author's Name Yoshiyasu Ueno
4th Author's Affiliation University of Elrctro-Communications(UEC)
Date 2017-10-27
Paper # OCS2017-55,OPE2017-87,LQE2017-60
Volume (vol) vol.117
Number (no) OCS-263,OPE-264,LQE-265
Page pp.pp.97-102(OCS), pp.97-102(OPE), pp.97-102(LQE),
#Pages 6
Date of Issue 2017-10-19 (OCS, OPE, LQE)