Simultaneous measurement of temperature, hydrostatic pressure and acoustic signal using a single distributed Bragg reflector fiber laser

Yan-Nan Tan; Yang Zhang; Bai-Ou Guan

doi:10.1117/12.884721

19 May 2011 Simultaneous measurement of temperature, hydrostatic pressure and acoustic signal using a single distributed Bragg reflector fiber laser

Yan-Nan Tan, Yang Zhang, Bai-Ou Guan

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539S (2011) https://doi.org/10.1117/12.884721
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A fiber-optic sensor based on a dual polarization fiber grating laser for simultaneous measurement of temperature, hydrostatic pressure and acoustic signal is proposed and experimentally demonstrated. The acoustic wave induces a frequency modulation (FM) of the carrier in radio frequency (RF) range generated by the fiber laser and can be easily extracted by using the FM demodulation technique. The temperature can be determined by the laser wavelength. The hydrostatic pressure can be determined by monitoring the static shift of the carrier frequency and deducting the effect of the temperature.

Citation Download Citation

Yan-Nan Tan, Yang Zhang, and Bai-Ou Guan "Simultaneous measurement of temperature, hydrostatic pressure and acoustic signal using a single distributed Bragg reflector fiber laser", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539S (19 May 2011); https://doi.org/10.1117/12.884721

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