Progress on high-precision laser-based underwater frequency transfer

Hou Dong; Ren Junwei; Guo Guangkun; Liu Ke

doi:10.12086/oee.2023.220149

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Hou D, Ren J W, Guo G K, et al. Progress on high-precision laser-based underwater frequency transfer[J]. Opto-Electron Eng, 2023, 50(2): 220149. doi: 10.12086/oee.2023.220149

Citation:

Hou D, Ren J W, Guo G K, et al. Progress on high-precision laser-based underwater frequency transfer[J]. Opto-Electron Eng, 2023, 50(2): 220149. doi: 10.12086/oee.2023.220149

Progress on high-precision laser-based underwater frequency transfer

School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China

Fund Project: National Natural Science Foundation of China (61871084, 62271109), Applied Basic Research Program of Sichuan Province (2019YJ0200), and Equipment Advance Research Field Foundation (315067206, 315067207), China.

More Information

^*Corresponding author: houdong@uestc.edu.cn

Received Date 30 June 2022

Revised Date 19 December 2022

Accepted Date 23 December 2022

Available Online 16 February 2023

Published Date 25 February 2023

Abstract

Abstract

Inspired by underwater wireless optical communication, laser-based underwater frequency transfer technology extends frequency transfer and dissemination from fiber links and free-space links to underwater links and shows greater potential for applications. Compared with traditional underwater frequency transfer technologies (sonar, fiber links), laser-based underwater frequency transfer technology is more flexible and avoids the multipath effect and high latency. In the future, this technology is expected to contribute to the applications of underwater navigation and sensing, distributed observation networks, tracking and positioning systems, etc. This paper first introduces the background and significance of the underwater laser-based frequency transfer technique, and briefly shows the achievements of domestic and foreign scientific research institutions in underwater laser-based frequency transfer. Next, the paper presents the time domain and frequency domain descriptions of underwater link properties, in which the former is based on the refractive index perturbation of the water column and the latter is based on the Kolmogorov atmospheric turbulence model. Then, the research results of the University of Electronic Science and Technology in laser-based underwater frequency transfer are reported, including the electrical phase compensation technique, the optical phase compensation technique, and the multiple-access frequency dissemination technique. Finally, the three laser-based underwater frequency transfer experiments are summarized, and the future works of our group in laser-based underwater frequency transfer have been prospected. As a promising underwater frequency transfer technology, laser-based underwater frequency transfer technology will play a crucial role in relevant applications in the future.
- metrology of time and frequency /
- underwater frequency transfer /
- timing fluctuation suppression /
- phase compensation

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References

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