Title:
OPTICAL SIGNAL PROCESSING DEVICE, TAP COEFFICIENT UPDATING METHOD, PROGRAM, AND OPTICAL SIGNAL PROCESSING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/223475
Kind Code:
A1
Abstract:
An optical signal processing device (1) comprises: a polarization separator (11) for separating an input polarization multiplexed signal; an optical coupler (12x) for branching one polarization component; an optical coupler (12y) for branching the other polarization component; optical filters (2a, 2b) to which the polarization component branched by the optical coupler (12x) is input; optical filters (2c, 2d) to which the polarization component branched by the optical coupler (12y) is input; an optical coupler (13x) for multiplexing the outputs of the optical filters (2a, 2c); an optical coupler (13y) for multiplexing the outputs of the optical filters (2b, 2d); and a tap coefficient updating unit (10) for separating a polarization multiplexed signal by adaptively setting tap coefficients of the optical filters (2a to 2d).
Inventors:
MATSUDA TOSHIYA (JP)
NAKAGAWA MASAHIRO (JP)
MASUMOTO KANA (JP)
NISHIYAMA KOTA (JP)
NAKAGAWA MASAHIRO (JP)
MASUMOTO KANA (JP)
NISHIYAMA KOTA (JP)
Application Number:
PCT/JP2022/020723
Publication Date:
November 23, 2023
Filing Date:
May 18, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04B10/67; H04J14/06
Foreign References:
| US20200195354A1 | 2020-06-18 |
Other References:
CHRISTOPHER R. DOERR: "Proposed Architecture for MIMO Optical Demultiplexing Using Photonic Integration", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 23, no. 21, 1 November 2011 (2011-11-01), USA, pages 1573 - 1575, XP011385615, ISSN: 1041-1135, DOI: 10.1109/LPT.2011.2164061
ZHOU HAILONG, ZHAO YUHE, WEI YANXIAN, LI FENG, DONG JIANJI, ZHANG XINLIANG: "All-in-one silicon photonic polarization processor", NANOPHOTONICS, DE GRUYTER, DE, vol. 8, no. 12, 1 December 2019 (2019-12-01), DE , pages 2257 - 2267, XP093111120, ISSN: 2192-8606, DOI: 10.1515/nanoph-2019-0310
A. M. J. KOONEN ; HAOSHUO CHEN ; H. P. A. VAN DEN BOOM ; O. RAZ: "Silicon Photonic Integrated Mode Multiplexer and Demultiplexer", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 24, no. 21, 1 November 2012 (2012-11-01), USA, pages 1961 - 1964, XP011488483, ISSN: 1041-1135, DOI: 10.1109/LPT.2012.2219304
ZHOU HAILONG, ZHAO YUHE, WEI YANXIAN, LI FENG, DONG JIANJI, ZHANG XINLIANG: "All-in-one silicon photonic polarization processor", NANOPHOTONICS, DE GRUYTER, DE, vol. 8, no. 12, 1 December 2019 (2019-12-01), DE , pages 2257 - 2267, XP093111120, ISSN: 2192-8606, DOI: 10.1515/nanoph-2019-0310
A. M. J. KOONEN ; HAOSHUO CHEN ; H. P. A. VAN DEN BOOM ; O. RAZ: "Silicon Photonic Integrated Mode Multiplexer and Demultiplexer", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE, USA, vol. 24, no. 21, 1 November 2012 (2012-11-01), USA, pages 1961 - 1964, XP011488483, ISSN: 1041-1135, DOI: 10.1109/LPT.2012.2219304
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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