A dual-Brillouin-peak optical fiber for simultaneous distributed strain and temperature measurement

Xiaoguang Sun; Kyle Bedard; Jie Li; Robert S. Dyer

doi:10.1117/12.2500926

23 October 2018 A dual-Brillouin-peak optical fiber for simultaneous distributed strain and temperature measurement

Xiaoguang Sun, Kyle Bedard, Jie Li, Robert S. Dyer

Proceedings Volume 10821, Advanced Sensor Systems and Applications VIII; 1082103 (2018) https://doi.org/10.1117/12.2500926
Event: SPIE/COS Photonics Asia, 2018, Beijing, China

Abstract

Single mode (SM) optical fiber with multiple Brillouin scattering peaks can be used for simultaneous strain and temperature measurement based on Brillouin frequency shift (BFS), but the measurement uncertainties are high due to the low Brillouin gains of higher-order acoustic modes. A new SM fiber is designed and fabricated with enhanced Brillouin gain of higher-order acoustic modes so that the gains of the multiple Brillouin peaks are at a similar level. The temperature coefficients of the BFSs of the peaks are also made significantly different to improve the accuracy of the measured strain and temperature.

Citation Download Citation

Xiaoguang Sun, Kyle Bedard, Jie Li, and Robert S. Dyer "A dual-Brillouin-peak optical fiber for simultaneous distributed strain and temperature measurement", Proc. SPIE 10821, Advanced Sensor Systems and Applications VIII, 1082103 (23 October 2018); https://doi.org/10.1117/12.2500926

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