Author： Chao-Qun Ma Wu Li-Fei Yan-Yi Jiang Hong-Fu Yu Zhi-Yi Bi Long-Sheng Ma
Publisher： IOP Publishing
E-ISSN： 1741-4199|24|8|84209-84212
ISSN： 1674-1056
Source： Chinese Physics B, Vol.24, Iss.8, 2015-08, pp. : 84209-84212
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Abstract
We demonstrate coherent transfer of an ultra-stable optical frequency at 192.8 THz over 50-km spooled fiber. Random phase noise induced by environmental disturbance through fiber is detected and suppressed by feeding a correctional signal into an acousto-optic modulator. After being compensated, the fiber-induced frequency instability is 2×10−17 at 1-s averaging time and reaches 8×10−20 after 16 h. The noise floor of the compensation system could be as low as 2×10−18 at 1-s averaging time.
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