A new optical frequency transfer method via fibre based on active phase noise compensation with single acousto-optic modulator
Guoyong Wang, Yuanbo Yao, Tao Yan +2 more
In this paper, we propose and experimentally demonstrate a new method for optical frequency transfer over fibre.Instead of dual acousto-optic modulators (AOMs) as adopted in the traditional fibre phase noise compensation setup, here an active fibre phase noise compensation scheme with a single acousto-optic modulator (AOM) is used.The configuration simplifies the equipment of the user end while maintaining a high-performance optical frequency transfer stability.We demonstrate an actively stabilized coherent transfer at an optical frequency of 193.55THz over 10-km spooled fibre, obtaining a relative frequency stability (Allan deviation) of 3.84 × 10 -16 /1 s and 4.08 × 10 -18 /10 4 s, which is improved by about 2∼3 orders of magnitude in comparison with the one without any phase noise compensation that achieves a relative frequency stability of 1.81 × 10 -14 /1 s and 2.48 × 10 -15 /10 4 s.
Metrology and Measurement Systems•Jan 15, 2019•1 citation