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首页> 外文期刊>Optical Engineering >Sub-hundred-femtosecond level atmospheric transfer of microwave signal at X-band with active optical phase correction
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Sub-hundred-femtosecond level atmospheric transfer of microwave signal at X-band with active optical phase correction

机译：Sub-hundred-femtosecond level atmospheric transfer of microwave signal at X-band with active optical phase correction

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摘要

We propose and demonstrate a scheme for atmospheric transfer of microwave signals at X-band with sub-hundred-femtosecond level precision using active optical phase correction. With the proposed scheme, we have transferred a microwave signal at 9.192 GHz over a 60-m atmospheric link. The timing fluctuations and Allan deviations are both measured and analyzed to assess the performance of our scheme. The root-mean-square timing drift of the transferred microwave signal with timing fluctuation suppression is 44 fs, and the Allan deviation is 9 x 10(-14) at 1 s and 1 x 10(-17) at 1000 s with optical phase correction. The transmission link achieved a lower instability than currently reported cesium fountain clocks, which means this proposed transfer scheme could be employed to transfer cesium atomic clock over the atmospheric transmission link. (C) 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)

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