Study on the performance of passive digital phase demodulation algorithm based on 3×3 coupler and the hardware implementation

Yingjie Wu; Huang Tang; Chao Wang

doi:10.1117/12.2585238

8 January 2021 Study on the performance of passive digital phase demodulation algorithm based on 3×3 coupler and the hardware implementation

Yingjie Wu, Huang Tang, Chao Wang

Author Affiliations +

Proceedings Volume 11607, Optics Frontiers Online 2020: Distributed Optical Fiber Sensing Technology and Applications; 116070A (2021) https://doi.org/10.1117/12.2585238
Event: Optics Frontiers Online 2020: Distributed Optical Fiber Sensing Technology and Applications (OFO-3), 2020, Virtual Event, Online Only

Abstract

Four kinds of passive phase demodulation algorithms based on 3×3 couplers are introduced and analyzed in this paper. The performance of these algorithms in noisy environment are theoretically investigated and simulation under five conditions including ideal situation, amplitude noise, phase noise, coupler asymmetry, and weak signal is employed. The proposed arctangent scheme utilizing three outputs is designed and implemented in hardware system based on programmable logic devices and high speed digital-to-analog converters. The performance of the proposed hardware scheme is verified experimentally by applying into the optical fiber interference system.

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Yingjie Wu, Huang Tang, and Chao Wang "Study on the performance of passive digital phase demodulation algorithm based on 3×3 coupler and the hardware implementation", Proc. SPIE 11607, Optics Frontiers Online 2020: Distributed Optical Fiber Sensing Technology and Applications, 116070A (8 January 2021); https://doi.org/10.1117/12.2585238

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