| Presentation | 2020-11-20 Increasing the Extinction Ratio of Si Optical Modulators Hiroki Kojima, Jun-ichi Hujikata, Tomohiro Kita, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In recent years, digital coherent optical transmission systems have been put to practical use, and Si modulators with a high extinction ratio are required for coherent system. In this study, we have study to reduce the extinction ratio and have developed a Si modulator with a high extinction ratio of more than 25 dB. The factors limiting the extinction ratio are the intensity absorption due to the carrier plasma effect and the inclusion of TM polarization components. A high extinction ratio of more than 40 dB was successfully achieved by introducing a thermo-optical MZI optical switch to compensate power imbalance due to carrier plasma effect and a polarizer. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Silicon photonics / Optical modulators / High extinction ratio |
| Paper # | OPE2020-70,LQE2020-50 |
| 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) | Increasing the Extinction Ratio of Si Optical Modulators |
| Sub Title (in English) | |
| Keyword(1) | Silicon photonics |
| Keyword(2) | Optical modulators |
| Keyword(3) | High extinction ratio |
| 1st Author's Name | Hiroki Kojima |
| 1st Author's Affiliation | Waseda University(Waseda Univ.) |
| 2nd Author's Name | Jun-ichi Hujikata |
| 2nd Author's Affiliation | NEC(NEC) |
| 3rd Author's Name | Tomohiro Kita |
| 3rd Author's Affiliation | Waseda University(Waseda Univ.) |
| Date | 2020-11-20 |
| Paper # | OPE2020-70,LQE2020-50 |
| Volume (vol) | vol.120 |
| Number (no) | OPE-243,LQE-244 |
| Page | pp.pp.125-128(OPE), pp.125-128(LQE), |
| #Pages | 4 |
| Date of Issue | 2020-11-13 (OPE, LQE) |