Hundred-femtosecond-level concise optical time delay measurement system based on linear optical sampling

Fiber-delay measurement is one of the key fundamental technologies in numerous fields. Here, we propose and experimentally demonstrate a high-precision and concise optical time delay measurement system based on the technique of linear optical sampling, reaching the precision better than 100 fs under...

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Bibliographic Details
Published in:Review of scientific instruments 2023-08, Vol.94 (8)
Main Authors: Zhang, Yufei, Chen, Ziyang, Yu, Dongrui, Niu, Jialin, Chen, Xing, Guo, Hong
Format: Article
Language:English
Subjects:
Delay measurement systems
Optical frequency
Sampling
Scientific apparatus & instruments
Time lag
Time measurement
Timing jitter
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Summary:Fiber-delay measurement is one of the key fundamental technologies in numerous fields. Here, we propose and experimentally demonstrate a high-precision and concise optical time delay measurement system based on the technique of linear optical sampling, reaching the precision better than 100 fs under averaging. The use of only two optical frequency combs without locking the carrier-envelope-offset frequency greatly simplifies the structure of the time-delay measurement system. We also experimentally investigate the current limitations on the precision of the system. The timing jitter noises of two sources are mainly non-common mode and are both restricted to the frequency sources. Our results indicate that the proposed device can measure fiber length fluctuations below 10 µm, paving the way for further analyses of the external disturbances on the fiber link.
ISSN:0034-6748
1089-7623
DOI:10.1063/5.0157499