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<sup>-17</sup>/10<sup>2</sup><i>s</i> on 20 km optical fiber link. This work paves the way for ultra-stable frequency transmission and distribution networks.
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