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提出并验证了一种新型的以迈克耳逊干涉仪为基础的调频连续波（Ｆｒｅｑｕｅｎｃｙｍｏｄｕｌａｔｅｄｃｏｎｔｉｎｕｏｕｓ－ｗａｖｅ）干涉型长距离分布式光纤传感系统。该系统在干涉仪的参考回路中巧妙地引入了一个带有移频器的光学回路，使系统连续测量范围增加到４倍，达４８ｍ。
A new type of Frequency modulated continuous wave interferometer based long-distance distributed optical fiber sensing system based on Michelson interferometer was proposed and validated. The system cleverly introduces an optical circuit with a frequency shifter into the interferometer’s reference loop, which increases the system’s continuous measurement range by a factor of 4 up to 48 m.