论文部分内容阅读
提出一种基于半导体激光调频外差干涉原理的保偏光纤双折射率的测量方法,即通过测量由保偏光纤构成的偏振干涉仪输出的外差信号的频率,求得保偏光纤的相对双折射率。此方法具有较高的分辨率和潜在的高精度,以及系统结构简单、无运动部件和非破坏性测量等优点。
A method for measuring the birefringence of polarization-maintaining fiber based on the principle of FM laser heterodyne interference is proposed. By measuring the frequency of the heterodyne signal output by the polarization interferometer consisting of PM fiber, the relative double Refractive index. This method has high resolution and potential high accuracy, as well as the system structure is simple, no moving parts and non-destructive measurement advantages.