Highly accurate absolute optical transfer delay measurement over a long distance assisted by the pulse time signal
In this paper, an absolute optical transfer delay measurement method based on pulse time signal, pseudo-random code phase, and microwave phase is proposed. By employing two-stage integer ambiguity resolution, not only can a measurement range of several hundred kilometers be achieved, but sub-picosecond level measurement accuracy can also be attained. A test system was built in the laboratory and experimentally verified on a fiber optic link. The experimental results verify an accuracy of ±0.1 ps in measuring an ultrahigh-accuracy optical delay line. In addition, long fiber is also tested, which proves that a measurement range of at least 100 km can be achieved. The refresh rate of the measurement results can reach 100 ms each time.
Authors
- Jiawen Shi (ORCID: https://orcid.org/0000-0003-1952-9185)
- Jingyu Zhou (ORCID: https://orcid.org/0000-0001-6968-914X)
- Weibiao Chen (ORCID: https://orcid.org/0000-0001-7151-6926)
- Yichen Wang (ORCID: https://orcid.org/0000-0003-3781-2638)
- Chaoyang Li (ORCID: https://orcid.org/0000-0003-1455-2714)
- Kang Cao
- Fengping Zhao
- Fei Yang (ORCID: https://orcid.org/0000-0001-8369-3962)
- Xiao Zhang (ORCID: https://orcid.org/0000-0002-5122-7534)
Institutions
- University of Science and Technology of China (CN)
- Shanghai Institute of Optics and Fine Mechanics (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Optics Express
- Published
- 2024-10-11
- DOI
- https://doi.org/10.1364/oe.540255
- Citations
- 4
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.35
Funders
- National Natural Science Foundation of China
- Youth Innovation Promotion Association of the Chinese Academy of Sciences
- National Key Research and Development Program of China