1. State Key Laboratory of Advanced Optical Communication System and Networks,School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
2. State Key Laboratory of Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
3. School of Electronic Information and Optical Engineering, Nankai University, Tianjin 300071, China
4. Beijing Satellite Navigation Center, Beijing 100094, China
Abstract：The optical frequency comb locked to frequency reference (10 MHz) of a hydrogen atomic clock was used as a stable frequency source for frequency dissemination through commercial fiber link. The important is to cancel the noises acquired during the tansmission in the fiber link. The comb spectrum was spliced by a dense wavelength division multiplexer (WDM) to about 0.8 nm including 1000 comb lines. The phase noise was detected by comparing the local and returned remote comb. This noise was digitized and feed-forwarded to the remote end through an optical communication module. At the remote, the phase noise radio frequency recovered from the optical comb was compensated in accordance with the received digital signal. The system has been tested in a long distance (120 km) and a short distance (16 km) fiber link. The dissemination fractional frequency instability (Λ-counter) has been measured at 1.11×10-15/s in the long distance fiber link and 8.80×10-16/s in the short distance fiber link
鲁金龙,陈星,崔一凡,陆星,慈骋,章雪松,刘波,吴虹,汤庭松,施可彬,张志刚,郭弘. 基于光学频率梳的高精度频率传递系统[J]. 计量学报, 2015, 36(6A): 128-131.
LU Jin-long,CHEN Xing,CUI Yi-fan1,LU Xing,CI Cheng,ZHANG Xue-song,LIU Bo,WU Hong,TANG Ting-song,SHI Ke-bin,ZHANG Zhi-gang,GUO Hong. System of High Precise Frequency Dissemination Based on Optical Comb. Acta Metrologica Sinica, 2015, 36(6A): 128-131.
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2015, Vol. 36 
