提出了一种新型的干涉型光纤传感器阵列的消偏振衰落技术。在时分复用系统中,在全保偏传感基元的基础上,使用单模光纤做传输光纤搭建系统,通过对输入偏振态进行高频调制,能够在光强有所下降的情况下较好地解决了系统的偏振衰落问题。理论分析证明,当EOM相位调制的初相位设置为π/4,采样率和相位调制频率设置恰当时,通过PGC内调制解调技术可实现消偏振衰落。在理论分析的基础上进行了MATLAB软件模拟,解调出来的信号与原始信号基本重合。 A new kind of depolarization fading technology of interference type optical fiber sensor array is proposed. In the time-division multiplexing system, based on the full-preserving bias sensing element, a single-mode optical fiber is used as the transmission optical fiber building system. By performing high-frequency modulation on the input polarization state, Good solution to the system of polarization fading problem. The theoretical analysis proves that when the initial phase of EOM phase modulation is set to π / 4 and the sampling rate and phase modulation frequency are set properly, the depolarization fading can be realized by the modulation and demodulation technique in PGC. Based on the theoretical analysis, MATLAB software simulation is carried out. The demodulated signal basically coincides with the original signal.