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

Xiufeng Yang,Unnikrishnan C K C,Venugopalan Pallayil,Zhihao Chen,Jun Hong Ng,Yanbiao Liao,Youngjoo Chung,Yunjiang Rao,Kentaro Nakamura,David D Sampson,Ryozo Yamauchi,Wei Jin

doi:10.1117/12.974939

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

Xiufeng Yang, Unnikrishnan C K C + Show 10 more

https://doi.org/10.1117/12.974939

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Publication Date: Oct 17, 2012

Citations: 17

#Light Intensity Disturbance #Phase Generated Carrier + Show 8 more

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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.

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