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提出了一种基于菲佐干涉仪的并联复用光纤法-珀加速度传感器的解调原理及系统,其中光纤法-珀加速度传感器是基于惯性质量引起法-珀腔腔长变化实现加速度传感的原理。针对此并联复用系统,建立了菲佐干涉仪的相对输出光强与光纤法-珀加速度传感器的法-珀腔腔长和菲佐干涉仪的厚度之间的关系模型,进一步建立了基于菲佐干涉仪的光纤法-珀加速度传感器系统的加速度传感理论模型。在此基础上对菲佐干涉仪解调并联复用光纤法-珀加速度传感器信号的原理进行了数值仿真,并对基于菲佐干涉仪解调的多通道光纤法-珀加速度传感器并联复用能力进行了分析。研究结果表明,数值仿真结果和理论分析相吻合,菲佐干涉仪解调多通道光纤法-珀加速度传感器并联复用系统具有可行性。
A demodulation principle and system based on FISO interferometer for parallel multiplexing optical fiber method - Perl accelerometer is proposed. Optical fiber method - Perl accelerometer is based on the inertial mass, principle. For this parallel system, the relationship between the relative output intensity of the Fizo interferometer and the fiber length of the Fabry-Perot sensor and the thickness of the Fischer interferometer is established. Based on this model, Acceleration Sensing Theoretical Model of Optical Fiber Perot Accelerometer System Based on. On the basis of this, the principle of demodulation of the Fizo interferometer in parallel with the optical fiber method - Perka sensor signal is numerically simulated, and the parallel multiplexing ability of the multi-channel optical fiber-Perka sensor based on the Fizo interferometer demodulation Analyzed. The results show that the numerical simulation results are in good agreement with the theoretical analysis. It is feasible to use the FITO interferometer to demodulate the multi-channel fiber-PCA sensor parallel multiplexing system.