Optical frequency transfer via 146 km fiber link with 10-19 relative accuracy
Optical frequency transfer via 146 km fiber link with 10-19 relative accuracy
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DOI:
10.1364/ol.34.002270
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发表时间:
2009-08-01
期刊:
影响因子:
3.6
通讯作者:
Schnatz, H.
中科院分区:
文献类型:
--
作者:
Grosche, G.;Terra, O.;Schnatz, H.
We demonstrate the long-distance transmission of an ultrastable optical frequency derived directly from a state-of-the-art optical frequency standard. Using an active stabilization system we deliver the frequency via a 146-km-long underground fiber link with a fractional instability of 3 x 10(-15) at 1 s, which is close to the theoretical limit for our transfer experiment. After 30,000 s, the relative uncertainty for the transfer is at the level of 1 x 10(-19). Tests with a very short fiber show that noise in our stabilization system contributes fluctuations that are 2 orders of magnitude lower, namely, 3 x 10(-17) at 1 s, reaching 10(-20) after 4000 s. (C) 2009 Optical Society of America