Optimized Phase Generated Carrier (PGC) demodulation algorithm insensitive to C value

B. Wu; Y. Yuan; J. Yang; S. Liang; L. Yuan

doi:10.1117/12.2184268

1 July 2015 Optimized Phase Generated Carrier (PGC) demodulation algorithm insensitive to C value

B. Wu, Y. Yuan, J. Yang, S. Liang, L. Yuan

Author Affiliations +

Proceedings Volume 9655, Fifth Asia-Pacific Optical Sensors Conference; 96550C (2015) https://doi.org/10.1117/12.2184268
Event: Fifth Asia Pacific Optical Sensors Conference, 2015, Jeju, Korea, Republic of

Abstract

An optimized phase generated carrier (PGC) demodulation algorithm is proposed for signal demodulation of interferometer. Similar to the traditional PGC algorithm, this optimized algorithm also need to adopt differential cross multiply (DCM), divides the two signals which processed by differential cross-multiplying could get the square of the tangent function of the output phase, output phase can be obtained by the corresponding calculation. The output of the optimization algorithm has no related items of modulated amplitude (C value) and interference signal AC amplitude (B value), therefor the demodulation error caused by C value and B value fluctuation could be suppressed.

Citation Download Citation

B. Wu, Y. Yuan, J. Yang, S. Liang, and L. Yuan "Optimized Phase Generated Carrier (PGC) demodulation algorithm insensitive to C value", Proc. SPIE 9655, Fifth Asia-Pacific Optical Sensors Conference, 96550C (1 July 2015); https://doi.org/10.1117/12.2184268

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