Study on limit angle in terahertz time-domain spectral reflectance measurement

Guofang Luo; Haining Lu; Hongtao Chen; Xi Chen

doi:10.1117/12.3040312

16 August 2024 Study on limit angle in terahertz time-domain spectral reflectance measurement

Guofang Luo, Haining Lu, Hongtao Chen, Xi Chen

Proceedings Volume 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024); 132310P (2024) https://doi.org/10.1117/12.3040312
Event: 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 2024, Chongqing, China

Abstract

Cross-linked polyethylene cable has the advantages of safety, convenience, and simple maintenance, and has gradually become the main power transmission cable. However, the internal moisture content of the XLPE insulation sheath of buried cable will lead to the decline of power cable insulation performance. The accurate detection and location of water content distribution in power cables is very important for the safe operation of the power system. This paper presents a method of measuring the cable interior using reflection terahertz time-of-flight tomography. However, the tolerance of the terahertz optical path is very important for the usability of the test device. Through the test results of the angle tolerance of the terahertz optical path system in the insulating sheath, the angle incident tolerance of the system is finally obtained, and the location and area of the leakage defect of the insulating sheath are accurately measured within the range of the angle tolerance, the potential application of terahertz time-domain spectroscopy in cable detection is verified in this paper

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

Citation Download Citation

Guofang Luo, Haining Lu, Hongtao Chen, and Xi Chen "Study on limit angle in terahertz time-domain spectral reflectance measurement", Proc. SPIE 13231, 4th International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2024), 132310P (16 August 2024); https://doi.org/10.1117/12.3040312

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