Analysis of Brillouin Frequency Shift in Distributed Optical Fiber Sensor System for Strain and Temperature Monitoring

Yong Qing Fu, Qiang Wu, Xuewu Dai, Wai Pang Ng, Nageswara Lalam

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Citation (Scopus)

Abstract

In this paper, we have analyzed Brillouin frequency shift (BFS) in single mode silica optical fiber. The BFS is analyzed in conventional Brillouin optical time domain analysis (BOTDA) at operating wavelength of 1550 nm by a pump-probe technique. The effects of strain and temperature on BFS are fully characterized. We found that, the BFS change of 0.06 MHz/µ-strain and 1.26 MHz/oC, respectively. The BFS changes in Brillouin gain and Brillouin loss mechanism have been analyzed. In addition, we also presented Brillouin linewidth and peak gain variations of Brillouin gain spectrum with various temperature and strain values. The results demonstrate, the BFS have a strong linear relationship with strain and temperature along the sensing fiber.
Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Photonics, Optics and Laser Technology
PublisherScitepress
Pages333-340
ISBN (Print)978-989-758-174-8
DOIs
Publication statusPublished - 2016

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