A PGC demodulation based on differential-cross-multiplying (DCM) and arctangent (ATAN) algorithm with low harmonic distortion and high stability

Xiufeng Yang; Zhihao Chen; Jun Hong Ng; Venugopalan Pallayil; Unnikrishnan C. K. C.

doi:10.1117/12.974939

17 October 2012 A PGC demodulation based on differential-cross-multiplying (DCM) and arctangent (ATAN) algorithm with low harmonic distortion and high stability

Xiufeng Yang, Zhihao Chen, Jun Hong Ng, Venugopalan Pallayil, Unnikrishnan C. K. C.

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84215J (2012) https://doi.org/10.1117/12.974939
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A novel phase generated carrier (PGC) demodulation algorithm based on differential-cross-multiplying (DCM) and arctangent function (ATAN) is proposed in this paper. We investigate the stability with light intensity disturbance (LID) and the harmonic distortion due to nonlinearity both theoretically and experimentally. The nonlinearity of the proposed PGC demodulation algorithm has been analyzed. Compared with the traditional PGC-arctan and PGC-DCM algorithm, this PGC algorithm inherently has much lower total harmonic distortion (THD) as well as high stability with LID.

Citation Download Citation

Xiufeng Yang, Zhihao Chen, Jun Hong Ng, Venugopalan Pallayil, and Unnikrishnan C. K. C. "A PGC demodulation based on differential-cross-multiplying (DCM) and arctangent (ATAN) algorithm with low harmonic distortion and high stability", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84215J (17 October 2012); https://doi.org/10.1117/12.974939

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