OPTICAL TRANSMISSION SYSTEM, OPTICAL TRANSMISSION METHOD, AND RELAY AMPLIFIER

Abstract: an optical transmission system comprising: an optical transmitter; an optical receiver; and a relay amplification device for amplifying and relaying an optical signal, in which the optical transmitter and the relay amplification device are connected by a first multi-core fiber, the optical receiver and the relay amplification device are connected by a second multi-core fiber, in which the relay amplification device includes a branch unit for branching optical signals transmitted by respective cores of the first multi-core fiber into a plurality of single-core fibers, a spectrum inversion unit for performing optical parametric amplification on the respective optical signals with pump lights to output phase conjugate lights of respective optical signals generated by the optical parametric amplification; and a multiplex unit for multiplexing the phase conjugate lights of the respective optical signals output from the spectrum inversion unit to output the multiplexed lights to the second multi-core fiber.

Inventor(s): Megumi HOSHI, Koki SHIBAHARA, Shimpei SHIMIZU, Yutaka MIYAMOTO

CPC Classification: H04B10/29 (Repeaters)

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