干涉型光纤传感器PGC解调方法的改进
Improvement of Demodulation Method for Interferometric Optical Fiber Sensor PGC
摘要: 为了克服伴生调幅对光源调频型相位生成载波(PGC)解调方法的影响，提出一种改进的微分交叉相乘(differential cross multiply, DCM)的PGC解调方法。仿真实验结果表明，新方法较好地消除了光源伴生调幅的影响。新方法的信纳比和稳定性均有显著的改善，解调信号的信纳比提高15 dB以上，解调信号幅值的长期稳定性提高23倍。
Abstract: In order to eliminate the effect of amplitude modulation in the source with direct frequency modulation on phase generated carrier (PGC) demodulation, an improved PGC method was proposed based on differential cross multiply (DCM). The simulation results confirm that the improved scheme has eliminated the effect of the associated amplitude modulation. The stability and signal to noise and distortion (SINAD) are also enhanced significantly. The SINAD of demodulation signals is improved 15 dB, and the stability of demodulation signals is increased 23 times.
文章引用：杨乐鑫, 时敏, 石开明. 干涉型光纤传感器PGC解调方法的改进[J]. 声学与振动, 2025, 13(3): 63-69. https://doi.org/10.12677/ojav.2025.133006

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