High performance wavelength demodulator for DFB fiber laser sensor using novel PGC algorithm and reference compensation method

Jun He; Fang Li; Wentao Zhang; Lin Wang; Tuanwei Xu; Yuliang Liu

doi:10.1117/12.885823

17 May 2011 High performance wavelength demodulator for DFB fiber laser sensor using novel PGC algorithm and reference compensation method

Jun He, Fang Li, Wentao Zhang, Lin Wang, Tuanwei Xu, Yuliang Liu

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775333 (2011) https://doi.org/10.1117/12.885823
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

We demonstrate a high performance wavelength demodulator for DFB FL sensor using novel PGC algorithm and reference compensation method (RCM). An unbalanced fiber Michelson interferometer is employed and the phase demodulation is accomplished by a digital PGC-Arctan-DSM algorithm. The RCM is adopted to eliminate the environmental noise using a shielded and multiplexed DFB FL as a reference. Experimental results have demonstrated a resolution of 3.5×10-7 pm/√Hz, a dynamic range of 120 dB @ 100 Hz, a THD of below 0.1 %, and a linearity of 99.99 %. More than 50 dB reduction of the environmental noise has been experimentally achieved within 10-1000 Hz.

Citation Download Citation

Jun He, Fang Li, Wentao Zhang, Lin Wang, Tuanwei Xu, and Yuliang Liu "High performance wavelength demodulator for DFB fiber laser sensor using novel PGC algorithm and reference compensation method", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775333 (17 May 2011); https://doi.org/10.1117/12.885823

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