Remote Control Based All Optical Signal Processing and Design Method of Its All Optical Network

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K14982
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 21020:Communication and network engineering-related
• Research Institution: Osaka University
• Principal Investigator: Hisano Daisuke 大阪大学, 工学研究科, 助教 (40802088)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 光ファイバ通信 / 全光信号処理 / 波長変換 / 四光波混合

Outline of Final Research Achievements

To reduce the number of pump light sources in all-optical networks, we propose a remotely controlled wavelength conversion technique in which the pump light sources can be concentrated in a few nodes. We analyzed the impact of signal distortion caused by pump light propagation in optical fibers on wavelength conversion by computer simulation for core-metro networks. To employ the proposed method on the access metro convergence networks (AMCNs), we conducted the fiber transmission experiments to analyze the impact of signal distortion caused by pump light propagation in optical fibers on wavelength conversion. In addition, we solved the optimization problem of the reduction ratio of the number of pump light sources.

Free Research Field

光ファイバ通信

Academic Significance and Societal Importance of the Research Achievements

コア・メトロネットワークでは，波長資源の高効率利用を目指して波長分割多重(WDM)方式が導入されているが，波長スロットのフラグメンテーションが課題となっている．効率的なデフラグメンテーションのために，全光波長変換器(AOWC) の導入が望まれているが，AOWC1台あたりに狭線幅な光源が必要となる．本研究成果は，このAOWCで使用するデバイス点数の削減を目的とし，まずは高価な狭線幅レーザの数を削減する手法の検討を行った．全光ネットワーク構築時のネットワーク全体の低コスト化に向けた先駆的な検討の一種であるといえる。