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30 January 2012 Fiber laser sensor interrogation system development and test
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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 83513E (2012)
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia
The development and test of the fiber laser interrogation system is demonstrated in this paper. Unbalanced Michelson interferometer and digital phase-generated carrier (PGC) demodulation are adopted by the interrogation system. Interferometric interrogation principle and overall interrogation system are described. The interrogation system consists of digital PGC demodulation algorithm, data acquisition, photodiode amplifier and low-pass filter, PGC phase carrier generation and unbalanced Michelson interferometer. Realization methods and the performance of the above system components are discussed in detail. In order to simulate the wavelength shift induced by measurand, a standard wavelength shift signal generator is set up and its frequency response is tested. Interrogation experiment of acoustics signal in water is carried out, and the frequency response of the uncoated DFB fiber laser is obtained.
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Zhihui Sun, Jinyu Wang, Jun Chang, Jiasheng Ni, Li Min, Chang Wang, and Gangding Peng "Fiber laser sensor interrogation system development and test", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83513E (30 January 2012);

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