提出用光纤相位传感器代替传统的微音器检测光声信号。
The optical fiber phase sensor is used to replace the traditional microphone to detect photoacoustic signal.
传感器利用注入结电流直接调频的半导体激光(LD)产生外差干涉，从而实现了干涉相位的线性检测。
A heterodyne interference is caused by a frequency modulation of a laser diode (LD) with a ramp injection current, and a linear phase detection is realized.
采用磁栅转矩传感器和一种新的微机辅助相位差检测方法，研制了一套新型动态转矩测量系统。
Based on the magnetic grid torque transducer and a new computer aided method to measure phase difference, a new measuring system for dynamic torque is developed.
提出用光纤相位传感器代替传统的微音器检测光声信号，讨论了光纤中光波的相位变化与光声信号的关系。
The optical fiber phase sensor is used to replaces traditional microphone, and the relationship between light phase and photoacoustic signal is discussed.
对适用于干涉型光纤水声传感器阵列的PGC（相位载波）调制—解调单元光纤水声传感器进行了研究，分析得出了光纤水声传感器PGC检测新的带宽要求；
This paper presents the research on the interferometric fiber-optic sensor's PGC scheme which is suitable for the construction of the acoustic sensor array.
对适用于干涉型光纤水声传感器阵列的PGC（相位载波）调制—解调单元光纤水声传感器进行了研究，分析得出了光纤水声传感器PGC检测新的带宽要求；
This paper presents the research on the interferometric fiber-optic sensor's PGC scheme which is suitable for the construction of the acoustic sensor array.
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