Multi-path optical fiber transfer delay measurement based on compressed sensing

Jingxian Wang; Xiangchuan Wang; Lihan Wang; Xi Liu; Sihao Yang; Qianwen Sang; Shilong Pan

doi:10.1117/12.3047759

5 December 2024 Multi-path optical fiber transfer delay measurement based on compressed sensing

Jingxian Wang, Xiangchuan Wang, Lihan Wang, Xi Liu, Sihao Yang, Qianwen Sang, Shilong Pan

Proceedings Volume 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024); 1341815 (2024) https://doi.org/10.1117/12.3047759
Event: 15th International Conference on Information Optics and Photonics (CIOP2024), 2024, Xi’an, China

Abstract

High-accuracy optical fiber transfer delay (OFTD) measurement is critical in the application of distributed optical sensing, optically controlled phased array, distributed coherent aperture radar, etc. There is always a need to measure multi-path OFTD in these scenarios. This paper proposes a fast multi-path OFTD measurement method based on compressed sensing (CS) technology with high spatial resolution. A sweep microwave signal with sparse frequency modulates an incoherent light microwave to generate the probe light. The signal from the fiber under test (FUT) with multiple delays is received by a photodetector and further reconstructed based on the compressed sensing technology to calculate the delays of the FUT. In the proof-of-concept experiment, the required amount of data to be collected and processed is only about 20%-30% of that needed in traditional approaches. The experimental results show that the time domain response of two optical links with a difference of 49 ps has been successfully obtained

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jingxian Wang, Xiangchuan Wang, Lihan Wang, Xi Liu, Sihao Yang, Qianwen Sang, and Shilong Pan "Multi-path optical fiber transfer delay measurement based on compressed sensing", Proc. SPIE 13418, Fifteenth International Conference on Information Optics and Photonics (CIOP 2024), 1341815 (5 December 2024); https://doi.org/10.1117/12.3047759

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KEYWORDS

Picosecond phenomena

Compressed sensing

Microwave radiation

Optical fibers

Reflection

Spatial resolution

Phased array optics

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