@inproceedings{d61cf277d40e4a8782ae8c87af828dca,
title = "High-sensitivity and fast distributed optical fiber pressure sensor",
abstract = "A high-sensitivity and fast distributed optical fiber pressure sensor based on optical frequency-agile phase-sensitive optical time-domain reflectometry (f-OTDR) technique is proposed, and the standard single-mode fiber (SMF) is used as sensing fiber to demonstrate its pressure sensing performance. Two electro-optic modulators (EOMs) are connected in series in the same optical path and modulated by an arbitrary waveform generator (AWG) to generate a set of frequency-agile pulses. The duration of single frequency pulse is 250 ns, and the interval between the two sets of frequency-agile pulses sequence is 5 µs. The injection locking technique is used to filter and amplify the frequency-agile pulses with a higher extinction ratio, and make the peak power of the frequency-agile pulses more stable. The measurement results show that in the pressure range of 0 to 1.8 MPa, and the pressure sensitivity of Rayleigh scattering spectrum frequency shift difference of the standard SMF is 702.5 MHz/MPa, which is about 1000 times that of the standard SMF based on BOTDA method. With an average of 64 times, the single pressure measurement time is only 1.92 ms.",
keywords = "High-sensitivity, Rayleigh scattering spectrum frequency shift difference, frequency-agile f-OTDR, optical fiber pressure sensor",
author = "Liqiang Qiu and Wenjuan Guo and Qiang Ding and Guanghui Wang and Yue Wang and Yongkang Dong",
note = "Publisher Copyright: {\textcopyright} 2022 SPIE; 8th Symposium on Novel Photoelectronic Detection Technology and Applications ; Conference date: 07-12-2021 Through 09-12-2021",
year = "2022",
doi = "10.1117/12.2625078",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Junhong Su and Lianghui Chen and Junhao Chu and Shining Zhu and Qifeng Yu",
booktitle = "Eighth Symposium on Novel Photoelectronic Detection Technology and Applications",
address = "美国",
}