| Presentation | 2020-11-20 Spectral linewidth reduction of hybrid tunable laser by loading optical negative feedback circuit Tatsuki Komatsubara, Toshiaki Okachi, Nobuhide Yokota, Hiroshi Yasaka, Tomohiro Kita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Spectral linewidth of a hybrid tunable laser consisted from SOA and Si optical circuits is reduced by loading an optical negative feedback circuit. In this study, Si optical ring filter is used as a frequency discriminator for the optical negative feedback circuit. In order to minimize the spectral linewidth of the laser source, coupling efficiency between the laser cavity and the optical negative feedback circuit is optimized through calculation of power spectral density of FM noise. It is confirmed that the narrow spectral linewidth of less than 10 kHz can be obtained by setting the coupling efficiency to optimized value. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical negative feedback / Hybrid tunable lasers / Linewidth narrowing / Ring resonator / Frequency noise |
| Paper # | OPE2020-71,LQE2020-51 |
| Date of Issue | 2020-11-13 (OPE, LQE) |
| Conference Information | |
| Committee | OPE / LQE |
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| Conference Date | 2020/11/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Goji Nakagawa(Fujitsu) / Hiroshi Yasaka(Tohoku Univ.) |
| Vice Chair | Takaaki Ishigure(Keio Univ.) / Toshitada Umezawa(NICT) |
| Secretary | Takaaki Ishigure(Gunma Univ.) / Toshitada Umezawa(Fujikura) |
| Assistant | Junichi Fujikata(PETRA) / Toshio Watanabe(Kagoshima Univ.) / Kazuue Fujita(Hamamatsu) / Nobuhiko Nishiyama(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on OptoElectronics / Technical Committee on Lasers and Quantum Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Spectral linewidth reduction of hybrid tunable laser by loading optical negative feedback circuit |
| Sub Title (in English) | |
| Keyword(1) | Optical negative feedback |
| Keyword(2) | Hybrid tunable lasers |
| Keyword(3) | Linewidth narrowing |
| Keyword(4) | Ring resonator |
| Keyword(5) | Frequency noise |
| 1st Author's Name | Tatsuki Komatsubara |
| 1st Author's Affiliation | Waseda University(Waseda Univ.) |
| 2nd Author's Name | Toshiaki Okachi |
| 2nd Author's Affiliation | Waseda University(Waseda Univ.) |
| 3rd Author's Name | Nobuhide Yokota |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University(Tohoku Univ.) |
| 4th Author's Name | Hiroshi Yasaka |
| 4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University(Tohoku Univ.) |
| 5th Author's Name | Tomohiro Kita |
| 5th Author's Affiliation | Waseda University(Waseda Univ.) |
| Date | 2020-11-20 |
| Paper # | OPE2020-71,LQE2020-51 |
| Volume (vol) | vol.120 |
| Number (no) | OPE-243,LQE-244 |
| Page | pp.pp.129-132(OPE), pp.129-132(LQE), |
| #Pages | 4 |
| Date of Issue | 2020-11-13 (OPE, LQE) |