13 October 2008 Wavelength demodulation detection scheme for an optical fiber temperature sensor
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A wavelength demodulation detection scheme was proposed based on the polarization mode interference in polarization maintaining optical fiber (PMF), and the sensing equation was obtained. Compared to the conventional intensity-based detection technique, this wavelength demodulation technique overcomes the effect of the source power fluctuation and the variation of optical loss that occurs in the transmission fiber. An experiment system was setup and the relationship between the frequency of wavelength domain and temperature was obtained within the temperature range -40 °C to 80 ° C. Experimental results agree well with theoretical prediction.
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Chunjiao Xu, Chunjiao Xu, Xiaozhe Zhang, Xiaozhe Zhang, Yuanhong Yang, Yuanhong Yang, } "Wavelength demodulation detection scheme for an optical fiber temperature sensor", Proc. SPIE 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration, 71290W (13 October 2008); doi: 10.1117/12.807370; https://doi.org/10.1117/12.807370

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