Chinese Optics Letters, 2016, 14 (5): 050606, Published Online: Aug. 6, 2018
Temperature-compensated dual-polarization fiber grating laser sensors Download: 808次
Abstract
We report on temperature compensation for beat-frequency-encoded dual-polarization fiber laser sensors based on a cleave-rotate-splice method. By cleaving the laser cavity into two segments with comparable lengths, aligning them with a rotated angle of 90°, and then fusion splicing the two halves, the temperature sensitivity in terms of beat-frequency variation can be greatly reduced from 1.99 to 0.30 MHz / ° C (or by 84.9%). In contrast, the sensitivity to point loaded mass hardly changes. We also find that the beat-frequency fluctuation decreases from ± 30 to ± 25 kHz as a result of the temperature compensation.
Jianming Zhu, Long Jin, Yizhi Liang, Linghao Cheng, Bai-Ou Guan. Temperature-compensated dual-polarization fiber grating laser sensors[J]. Chinese Optics Letters, 2016, 14(5): 050606.