| Presentation | 2020-11-12 Modeling of couplings between two degenerate linearly-polarized modes based on dual three-dimensional Stokes Space Ryotaro Fukunaga, Koji Igarashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In mode-division-multiplexed transmission in multi-mode fibers (MMFs), it is essential to compensate for couplings between modes using multiple-input and multiple-output (MIMO) signal processing in optical receivers. To design the MIMO implementation, it is helpful to model for mode couplings in MMFs. By analogy of the polarization rotation in optical fibers, two degenerate modes with dual polarization are expressed by 4?1 Jones vectors, and their couplings can be described by a 4?4 Jones matrix. By modeling the 4?4 Jones matrix by a random unitary matrix, the mode group delay in MMFs has been investigated. From the viewpoint of physics, it is doubtful that the Jones matrix can be modeled by completely random unitary matrix, because the couplings between two degenerate modes can be composed of independent polarization rotation and mode couplings in MMFs. In this study, we propose the modeling of the couplings between two degenerate modes using the Stokes space, which is usually used for polarization rotation. Assuming that polarization rotation and mode coupling are independent, we show that couplings between two degenerate modes can be visualized on dual three-dimensional Stokes spaces. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | mode-division-multiplexing / mode coupling / polarization rotation |
| Paper # | OFT2020-39 |
| Date of Issue | 2020-11-05 (OFT) |
| Conference Information | |
| Committee | OFT / ITE-BCT / OCS / IEE-CMN |
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| Conference Date | 2020/11/12(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuji Matsuura(Tohoku Univ.) / / Joji Maeda(Tokyo Univ. of Science) / Shun Morimura(CRIEPI) |
| Vice Chair | / / / Kouji Hirata(Kansai Univ) |
| Secretary | (NTT) / (Sumitomo Electric) / / Kouji Hirata(NTT) |
| Assistant | Hajime Arao(Sumitomo Electric) / Yukihiro Goto(NTT) / / / Yuuichi Shinohara(TEPCO Power Grid) / Akihiro Tanaka(CRIEPI) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology / Technical Group on Broadcasting Technology / Technical Committee on Optical Communication Systems / Technical Meeting on Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Modeling of couplings between two degenerate linearly-polarized modes based on dual three-dimensional Stokes Space |
| Sub Title (in English) | |
| Keyword(1) | mode-division-multiplexing |
| Keyword(2) | mode coupling |
| Keyword(3) | polarization rotation |
| 1st Author's Name | Ryotaro Fukunaga |
| 1st Author's Affiliation | Osaka University(Osaka Univ.) |
| 2nd Author's Name | Koji Igarashi |
| 2nd Author's Affiliation | Osaka University(Osaka Univ.) |
| Date | 2020-11-12 |
| Paper # | OFT2020-39 |
| Volume (vol) | vol.120 |
| Number (no) | OFT-230 |
| Page | pp.pp.11-16(OFT), |
| #Pages | 6 |
| Date of Issue | 2020-11-05 (OFT) |