Research on the instantaneous-response burst-mode transmitter and receiver circuits.

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04600
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 21060:Electron device and electronic equipment-related
• Research Institution: Kyushu University
• Principal Investigator: Kimura Shunji 九州大学, システム情報科学研究院, 教授 (80732974)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 光アクセスネットワーク / バースト伝送 / バースト送受信器 / 瞬時応答回路 / 反転歪補償回路 / M値制御

Outline of Final Research Achievements

Burst-mode transmission technology used in optical access networks has been employed with instantaneous response performance that is far from ideal as a result of the fact that the ideal circuit configuration was not suitable for mass production. We were able to confirm the feasibility of a burst-mode transceiver technology with a simple circuit configuration that is compatible with mass production technologies such as capacitive coupling. An instantaneous response receiver circuit based on inverted distortion compensation technology using an average-value detection circuit was analytically shown to be capable of responding in as little as 7.56 nanoseconds. Furthermore, the operating principle of the burst-mode transmitter circuit, a feedback circuit configuration technique with a variable time constant for future high-speed burst-mode transmission using PAM4 modulation, and the effect of sensitivity improvement by M-value control on a multi-rate burst-mode receiver were clarified.

Free Research Field

光アクセスネットワーク

Academic Significance and Societal Importance of the Research Achievements

現在光アクセスネットワークに採用されているバースト送受信回路の多くは、量産性を確保する為に瞬時応答性能を犠牲にしているため、比較的長いオーバーヘッドを必要とする。本技術によるバースト送受信器を実現し、社会実装が可能になると光アクセスネットワークの伝送効率が飛躍的に向上する。今後、固定移動網融合など、移動体ネットワークにおいても光アクセスネットワークの技術は重要性を高めるものと思われるので、ネットワークを使うすべてのユーザにメリットをもたらす技術と言える。