| Presentation | 2020-10-23 A study on Kramers-Kronig receivers with regard to reduction of penalties due to sampling Kentaro Toba, Takaha Fujita, Enzo Tsukui, Kariyawasam Indipalage Amila Sampath, Joji Maeda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The direct detection method that reconstructs phase information using Kramers-Kronig (KK) relation is attracting attention for data center interconnects in the next generation. However, this method requires both high-speed A/D conversion (ADC) and high carrier-to-signal power ratio (CSPR). We have proposed a method to relax the requirements for ADC sampling rate and for CSPR by removing harmonics which result from two nonlinear operations: square-root and logarithm. In this report, we numerically investigated the relation between digital upsampling that be needed for elimination of harmonics and performance improvement by the proposed method. It is predicted that the proposed method will be effective by removing the harmonics by logarithmic operation with upsampled rate of three or four times the Nyquist rate. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical fiber communications / Kramers-Kronig relation / Direct detection / Digital upsample |
| Paper # | OCS2020-8,OPE2020-31,LQE2020-11 |
| Date of Issue | 2020-10-16 (OCS, OPE, LQE) |
| Conference Information | |
| Committee | OPE / OCS / LQE |
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| Conference Date | 2020/10/23(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Goji Nakagawa(Fujitsu) / Joji Maeda(Tokyo Univ. of Science) / Hiroshi Yasaka(Tohoku Univ.) |
| Vice Chair | Takaaki Ishigure(Keio Univ.) / / Toshitada Umezawa(NICT) |
| Secretary | Takaaki Ishigure(Gunma Univ.) / (Fujikura) / Toshitada Umezawa(NTT) |
| 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 Optical Communication Systems / 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) | A study on Kramers-Kronig receivers with regard to reduction of penalties due to sampling |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber communications |
| Keyword(2) | Kramers-Kronig relation |
| Keyword(3) | Direct detection |
| Keyword(4) | Digital upsample |
| 1st Author's Name | Kentaro Toba |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Takaha Fujita |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 3rd Author's Name | Enzo Tsukui |
| 3rd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 4th Author's Name | Kariyawasam Indipalage Amila Sampath |
| 4th Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 5th Author's Name | Joji Maeda |
| 5th Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2020-10-23 |
| Paper # | OCS2020-8,OPE2020-31,LQE2020-11 |
| Volume (vol) | vol.120 |
| Number (no) | OCS-206,OPE-207,LQE-208 |
| Page | pp.pp.1-6(OCS), pp.1-6(OPE), pp.1-6(LQE), |
| #Pages | 6 |
| Date of Issue | 2020-10-16 (OCS, OPE, LQE) |