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本文提出了一个根据输出光偏振椭圆度随光纤扭曲率的变化曲线上中心第一个峰点及其一个相邻谷点位置来求取光纤双折射的公式,讨论了具有非均匀双折射的光纤所对应的曲线的畸变.测试中采用一种新的消光法,使测量过程简单可靠.
This paper presents a formula for finding the birefringence of an optical fiber based on the position of the first peak on the curve of the output optical polarization ellipticity with the twist rate of the optical fiber and one of its adjacent valley points. The fiber with nonuniform birefringence Corresponding to the distortion of the curve of the test using a new extinction method, the measurement process is simple and reliable.