Polarization correlation of optical microfiber particle sensor system

Zhengtong Wei; Zhengwei Peng; Yang Yu; Shenghai Zhang; Jinsong Miao; Xudong Liu

doi:10.1117/12.2587487

2 December 2020 Polarization correlation of optical microfiber particle sensor system

Zhengtong Wei, Zhengwei Peng, Yang Yu, Shenghai Zhang, Jinsong Miao, Xudong Liu

Proceedings Volume 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics; 1171731 (2020) https://doi.org/10.1117/12.2587487
Event: 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 2020, Shanghai, China

Abstract

According to the theory of optical waveguide transmission, the polarization correlation of mode distribution in optical microfiber was simulated by numerical calculation, and the polarization correlation of the loss caused by single particle pollutant was less than 0.01 dB. The experimental system was set up. When using ordinary laser (polarization extinction ratio is about 16 dB), the result showed that the optical microfiber would maintain the polarization of the light source, and the polarization correlation of the loss caused by the particle pollution was about 1.5 dB; If using depolarized SLD light source (polarization extinction ratio is about 0.2 dB) instead, the relative loss variation of signal light was less than 0.11 dB, which reduced by about 13 times, and the polarization correlation caused by particles attached to the optical microfiber was basically eliminated. So that using depolarized light source could solve the polarization related problem of optical microfiber particle pollution sensing.

Citation Download Citation

Zhengtong Wei, Zhengwei Peng, Yang Yu, Shenghai Zhang, Jinsong Miao, and Xudong Liu "Polarization correlation of optical microfiber particle sensor system", Proc. SPIE 11717, 24th National Laser Conference & Fifteenth National Conference on Laser Technology and Optoelectronics, 1171731 (2 December 2020); https://doi.org/10.1117/12.2587487

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