Study on all-optical simultaneous wavelength converter for next generation photonic network

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14733
• 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: Mishina Ken 大阪大学, 大学院工学研究科, 准教授 (90466368)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 全光信号処理 / 波長変換 / シリコンフォトニクス

Outline of Final Research Achievements

The triple-band (S+C+L) transmission system using only C-band transceivers and all-optical wavelength conversions (AOWCs) without S- and L-bands optical transceivers has been reported. Although the AOWC employs highly nonlinear fibers, it is not applicable to photonic integrated circuits (PICs). For a device of successful wavelength conversion, a silicon-rich nitride (SRN) waveguide provides superior performance, as it is applicable to PIC and permits a high Kerr nonlinearity compared with conventional stoichiometric silicon nitride waveguide. In this study, we design the SRN-waveguide for AOWC and demonstrate the successful operation of AOWC of 64-channel × 64-Gb/s QPSK signals between the C+L bands and the S-band by numerical simulations.

Free Research Field

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Academic Significance and Societal Importance of the Research Achievements

第五世代移動通信システム（5G)よりも更に高度なアプリケーションの導入を目指したBeyond 5Gや6Gにおいて、光通信ネットワークのさらなる大容量化・低消費電力化・低遅延化が求められる。従来のエレクトロニクス（電子）ベースの技術をフォトニクス（光）ベースの技術に置き換えることにより、大幅な低消費電力化・低遅延化が期待される。さらに、多チャネル一括光信号処理を実現できれば、少ないデバイス数で高効率な処理が可能となる。