| Presentation | 2023-08-25 114-SDM real-time MIMO transmission over 6-mode 19-core fiber Shohei Beppu, Masahiro Kikuta, Masahiro Shigihara, Koji Igarashi, Daiki Soma, Yuta Wakayama, Noboru Yoshikane, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Space-division multiplexing (SDM) transmission systems, in which multiple channels with different spatial paths are multiplexed in a single optical fiber, are attracting attention as a means of dramatically increasing the transmission capacity of optical backbone networks. The SDM transmission includes mode-multiplexed transmission using different propagation modes and core-multiplexed transmission using different cores. Mode multiplexing can generally achieve a larger number of SDMs than core multiplexing but requires extensive multiple-input multiple-output (MIMO) digital signal processing (DSP) to compensate for crosstalk between modes. In recent years, the hardware implementation of MIMO signal processing and real-time MIMO transmission have been reported, albeit at a low baud rate. For even higher capacity, there is multimode multicore fiber transmission, which combines both core multiplexing and mode multiplexing to achieve massive SDM with the SDM count of product of number of cores and modes. Multimode multicore fiber transmission can realize SDM with more than 100 multiplexes, and 10 Pbps class transmission experiments have also been reported, which is 100 times higher than the capacity limit of 100 Tbps in conventional single-mode single-core fiber transmission systems. However, in the multimode multicore transmission experiments reported so far, MIMO signal processing to compensate for inter-mode crosstalk is performed offline, and real-time multimode multi-core fiber transmission has not been reported. In this study, we report the first real-time massive SDM transmission experiment using multimode multicore fiber, in which an FPGA board was newly developed as the MIMO signal processing platform and real-time 6-mode MIMO signal processing was implemented. Using the real-time 6-mode MIMO signal processing circuit and 6-mode 19-mode fiber, 114-SDM signals were demodulated in real-time and the bit error rates were measured. The bit error rates of all measured channels were less than the error correction threshold of the assumed error correction code. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Space-division multiplexing / Multicore fiber / Multimode fiber / Real-time MIMO |
| Paper # | OCS2023-25 |
| Date of Issue | 2023-08-17 (OCS) |
| Conference Information | |
| Committee | OFT / OCS / LSJ |
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| Conference Date | 2023/8/24(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Makoto Yamada(Osaka Metropolitan Univ.) / Takayuki Kobayashi(NTT) |
| Vice Chair | |
| Secretary | (NTT) / (Furukawa Electric) / (NTT) |
| Assistant | Yukihiro Goto(NTT) / Yoshitomo Kobayashi(Furukawa Electric) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology / Technical Committee on Optical Communication Systems / The Laser Society of Japan |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | 114-SDM real-time MIMO transmission over 6-mode 19-core fiber |
| Sub Title (in English) | |
| Keyword(1) | Space-division multiplexing |
| Keyword(2) | Multicore fiber |
| Keyword(3) | Multimode fiber |
| Keyword(4) | Real-time MIMO |
| 1st Author's Name | Shohei Beppu |
| 1st Author's Affiliation | KDDI Research(KDDI Research) |
| 2nd Author's Name | Masahiro Kikuta |
| 2nd Author's Affiliation | NEC Platforms(NEC Platforms) |
| 3rd Author's Name | Masahiro Shigihara |
| 3rd Author's Affiliation | NEC Platforms(NEC Platforms) |
| 4th Author's Name | Koji Igarashi |
| 4th Author's Affiliation | Osaka University(Osaka University) |
| 5th Author's Name | Daiki Soma |
| 5th Author's Affiliation | KDDI Research(KDDI Research) |
| 6th Author's Name | Yuta Wakayama |
| 6th Author's Affiliation | KDDI Research(KDDI Research) |
| 7th Author's Name | Noboru Yoshikane |
| 7th Author's Affiliation | KDDI Research(KDDI Research) |
| Date | 2023-08-25 |
| Paper # | OCS2023-25 |
| Volume (vol) | vol.123 |
| Number (no) | OCS-163 |
| Page | pp.pp.33-38(OCS), |
| #Pages | 6 |
| Date of Issue | 2023-08-17 (OCS) |