Absolute distance measurement with a large non-ambiguity range based on a stable  polarization-multiplexed dual-comb fiber laser

Ying Qin; Guoqing Hu; Guangwei Chen; Size Zheng; Hetian Li; Xiaochun Liao; Ya Liu; Huiyu Li; Zhiyong Zhang; Yue Zhao; Li Chen; Xiang Zhang; Peng Chen; Tengfei Wu; Zhehai Zhou; Jibo Han; Yu Bai

doi:10.1117/12.3036402

20 November 2024 Absolute distance measurement with a large non-ambiguity range based on a stable polarization-multiplexed dual-comb fiber laser

Ying Qin, Guoqing Hu, Guangwei Chen, Size Zheng, Hetian Li, Xiaochun Liao, Ya Liu, Huiyu Li, Zhiyong Zhang, Yue Zhao, Li Chen, Xiang Zhang, Peng Chen, Tengfei Wu, Zhehai Zhou, Jibo Han, Yu Bai

Author Affiliations +

Proceedings Volume 13241, Optical Metrology and Inspection for Industrial Applications XI; 132410M (2024) https://doi.org/10.1117/12.3036402
Event: SPIE/COS Photonics Asia, 2024, Nantong, Jiangsu, China

Abstract

We proposed an absolute distance measurement method with a large non-ambiguity range based on a polarization-multiplexed dual-comb fiber laser. By fully exploiting the intracavity linear loss based gain profile tilting and residual birefringence, polarization-multiplexed dual-comb pulses with tunable repetition rate difference and overlapping spectra in the 1530-nm gain region are obtained. The repetition frequency difference could be continuously tuned from ~89 to ~194 Hz. The alternative sampling under different repetition rate difference is experimentally verified to be effective approach to extend the non-ambiguity range in the single-cavity dual-comb ranging. The non-ambiguity range could reach thousands of kilometer while the precision could reach at least on the order of hundreds of micrometers. These results indicate a simple and intriguing route with a free-running laser source to obtain ranging with large non-ambiguity range, showing high potential in the applications such as satellite formation flying, large-scale 3D surface morphology measurement and so on.

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Ying Qin, Guoqing Hu, Guangwei Chen, Size Zheng, Hetian Li, Xiaochun Liao, Ya Liu, Huiyu Li, Zhiyong Zhang, Yue Zhao, Li Chen, Xiang Zhang, Peng Chen, Tengfei Wu, Zhehai Zhou, Jibo Han, and Yu Bai "Absolute distance measurement with a large non-ambiguity range based on a stable polarization-multiplexed dual-comb fiber laser", Proc. SPIE 13241, Optical Metrology and Inspection for Industrial Applications XI, 132410M (20 November 2024); https://doi.org/10.1117/12.3036402

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