High-precision frequency synchronization on protected optical fiber networks

Yiyao Cao; Xing Chen; Yinan Chen; Bin Luo; Song Yu

doi:10.1117/12.2635803

12 May 2022 High-precision frequency synchronization on protected optical fiber networks

Yiyao Cao, Xing Chen, Yinan Chen, Bin Luo, Song Yu

Proceedings Volume 12173, International Conference on Optics and Machine Vision (ICOMV 2022); 1217310 (2022) https://doi.org/10.1117/12.2635803
Event: International Conference on Optics and Machine Vision (ICOMV 2022), 2022, Guangzhou, China

Abstract

We demonstrate a reliable network to disseminate high-precision RF frequency by optical frequency comb via fiber link. Dense wavelength division multiplexing and MEMS optical switches are used in this network, which realize protection switching. In this network, high-precision frequency is transferred to multi-nodes. The fiber link is monitored in real time and the synchronized signal can be automatically recovered immediately. We propose a phase noise compensation technique that the fractional frequency instability was measured to be at 9.2 X 10^-17/10²s on 20 km optical fiber link. This work paves the way for ultra-stable frequency transmission and distribution networks.

Citation Download Citation

Yiyao Cao, Xing Chen, Yinan Chen, Bin Luo, and Song Yu "High-precision frequency synchronization on protected optical fiber networks", Proc. SPIE 12173, International Conference on Optics and Machine Vision (ICOMV 2022), 1217310 (12 May 2022); https://doi.org/10.1117/12.2635803

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