Optical frequency transfer over 377 km urban fiber link using EDFAs

Xue Deng; Jie Liu; Qi Zang; Dongdong Jiao; Dan Wang; Xiang Zhang; Weicheng Kong; Ruifang Dong; Tao Liu

doi:10.1117/12.2506390

15 November 2018 Optical frequency transfer over 377 km urban fiber link using EDFAs

Xue Deng, Jie Liu, Qi Zang, Dongdong Jiao, Dan Wang, Xiang Zhang, Weicheng Kong, Ruifang Dong, Tao Liu

Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109645L (2018) https://doi.org/10.1117/12.2506390
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China

Abstract

We demonstrate an optical frequency transfer over a 377 km-long fiber link using three bi-directional Erbium-doped fiber amplifiers (EDFAs) to compensate the fiber attenuation. Through active phase noise cancellation, we obtain a transfer instability of 2.2×10^-14 at 1 s and 6.2×10^-17 at 2000 s. The lasing effects induced by EDFAs are observed in the transfer link which reduce the gain performance of the EDFAs and deteriorate the stability of the signal. In the paper, the factors that may induce the lasing effects is discussed, specially, improper phase locking parameters may stimulate the lasing effects. The phase noise of the 377 km link and the transfer instability versus fiber lengths is also researched. This work makes a good foundation for our future research on long-distance optical frequency transfer.

Citation Download Citation

Xue Deng, Jie Liu, Qi Zang, Dongdong Jiao, Dan Wang, Xiang Zhang, Weicheng Kong, Ruifang Dong, and Tao Liu "Optical frequency transfer over 377 km urban fiber link using EDFAs", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109645L (15 November 2018); https://doi.org/10.1117/12.2506390

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