Investigation on upper limit of dynamic range of fiber optic interferometric sensors base on the digital heterodyne demodulation scheme

Nan Zhang; Zhou Meng; Wei Rao; Shuidong Xiong

doi:10.1117/12.975121

7 November 2012 Investigation on upper limit of dynamic range of fiber optic interferometric sensors base on the digital heterodyne demodulation scheme

Nan Zhang, Zhou Meng, Wei Rao, Shuidong Xiong

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 8421BE (2012) https://doi.org/10.1117/12.975121
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

The upper limit of dynamic range (ULDR) of the fiber optic interferometric sensors (FOIS) based on the digital heterodyne demodulation scheme is investigated in this paper. According to the analysis of the demodulation process, the ULDR is restricted by two factors: the heterodyne frequency and the digital orthogonal demodulation algorithm. We discuss the influence of both the factors on the ULDR respectively in detail and give the total ULDR of the FOIS system. Experiments with the different delayed heterodyne scheme are conducted to verify the theoretical analysis and the results are consistent with the analysis conclusion.

Citation Download Citation

Nan Zhang, Zhou Meng, Wei Rao, and Shuidong Xiong "Investigation on upper limit of dynamic range of fiber optic interferometric sensors base on the digital heterodyne demodulation scheme", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421BE (7 November 2012); https://doi.org/10.1117/12.975121

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