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1. (WO2018043320) OPTICAL TRANSMISSION SYSTEM

Pub. No.:    WO/2018/043320    International Application No.:    PCT/JP2017/030502
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Sat Aug 26 01:59:59 CEST 2017
IPC: H04B 10/2581
G02B 6/02
G02B 6/14
G02B 6/44
Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
日本電信電話株式会社
Inventors: URUSHIBARA Azusa
漆原 梓
MORI Takayoshi
森 崇嘉
SAKAMOTO Taiji
坂本 泰志
WADA Masaki
和田 雅樹
YAMAMOTO Takashi
山本 貴司
NAKAJIMA Kazuhide
中島 和秀
Title: OPTICAL TRANSMISSION SYSTEM
Abstract:
The optical transmission system according to the present disclosure is a mode-division multiplexing optical transmission system in which the transmission path is a multi-mode optical fiber in which a plurality of propagation modes are propagated, the system comprising an optical fiber transmission path (83) including an optical fiber having two or more propagation modes, and a plurality of mode converters (91) which cause mode coupling between at least one set of modes, wherein the variation in placement intervals of the plurality of mode converters (91) is no greater than a threshold value determined by the transmission path length (Lt) of the optical fiber transmission path (83).