OPTICAL AMPLIFICATION DEVICE, OPTICAL TRANSMISSION SYSTEM, AND OPTICAL AMPLIFICATION METHOD

WIPO Patent Application WO/2020/209170

A1

This optical amplification device comprises: a first optical spatial layout converting means (1300) for converting a spatial layout of a plurality of optical signal beams each propagating through a plurality of cores, from a coupled state (1100A) in which the optical signal beams interfere between the plurality of cores, to a non-coupled state (1200A) in which optical signal beam interference is suppressed between the plurality of cores; an optical amplifying means (1210) for amplifying, in the non-coupled state (1200A), the plurality of optical signal beams of the non-coupled state, and thereby generating a plurality of amplified optical signal beams; and a second optical spatial layout converting means (1400) for converting the spatial layout of the plurality of amplified optical signal beams, from the non-coupled state (1200A) to the coupled state (1100A). The optical amplification device is able to construct an optical fiber transmission system allowing for relay optical amplification that uses a coupled multi-core optical fiber as an optical transmission path.

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TAKESHITA HITOSHI (JP)
MATSUMOTO KEIICHI (JP)
YANAGIMACHI SHIGEYUKI (JP)

PCT/JP2020/015186

October 15, 2020

April 02, 2020

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NEC CORP (JP)

H01S3/067; G02B6/02; G02B6/26; H01S3/10; H04B10/291

JP2017021070A	2017-01-26
JP2014503081A	2014-02-06
US20180341120A1	2018-11-29
JP2016151716A	2016-08-22
JP2017072818A	2017-04-13

SHIMOSAKA Naoki (JP)

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