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2023 Fiscal Year Final Research Report

All-optical feedfoward fast automatic gain control scheme for multicore optical amplifiers

Research Project

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Project/Area Number 20K04483
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionShimane University

Principal Investigator

KITAMURA Kokoro  島根大学, 学術研究院理工学系, 助教 (60549179)

Co-Investigator(Kenkyū-buntansha) 増田 浩次  島根大学, 学術研究院理工学系, 教授 (60583127)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywords利得一定制御 / 光増幅器 / マルチコア
Outline of Final Research Achievements

We have proposed the all-optical feedforward automatic gain control (FF-AGC) scheme that can be applied to multicore erbium-doped fiber amplifiers in ultra-high capacity optical networks in the future. In this study, we investigated circuit configurations and performances of the all-optical FF-AGC circuit for fast and accurate operations. AGC circuits for L-band, in which signal wavelengths are longer than those in C-band in earlier studies, were studied. Further, AGC circuits using a semiconductor optical amplifier (SOA) were investigated. We clarified the performances of a novel double-pass configuration to suppress the effect of polarization dependences in the SOA.

Free Research Field

光通信および光計測

Academic Significance and Societal Importance of the Research Achievements

現在の大容量光通信ネットワークを支えている光ファイバ伝送システムは、伝送容量の限界に近づきつつある。将来の超大容量光ネットワークを支える新規空間分割多重技術として、マルチコアエルビウム添加ファイバ増幅器(MC-EDFA)を用いたマルチコア伝送技術の研究が進められている。本研究で検討する全光型FF-AGC方式は、MC-EDFAに適用可能なAGC方式として、世界的に先駆的な研究である。本研究で得られた回路構成およびその動作特性に関する知見は、将来の光ファイバ伝送システムを支えるマルチコア光増幅器の学術的および技術的な発展に寄与する。

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Published: 2025-01-30  

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