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Method for distributedly measuring polarization transmission matrices of optical fiber and system thereof
Method for distributedly measuring polarization transmission matrices of optical fiber and system thereof
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机译:分布式测量光纤偏振传输矩阵的方法及其系统
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摘要
A method for distributedly measuring polarization transmission matrices of an optical fiber includes steps of: inputting a fully polarized pulse into the optical fiber with linear birefringence only; and demodulating polarization states of Rayleigh backscattered light at different points on the optical fiber from a pulse input end; after demodulating, dividing the polarization states of the Rayleigh backscattered light into Q groups in sequence, wherein every three polarization states are divided into one group; calculating a transmission matrix of Group N; and solving the equation set using a numerical analysis method for obtaining multiple solutions, and screening the multiple solutions according to characteristics of the polarization transmission matrix, wherein each time of screening provides a unique solution Mx(N) of the equation set; continually updating MA values for iteration, so as to obtain the distribution of polarization transmission matrices of the optical fiber.
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机译:一种用于分布式测量光纤的偏振传输矩阵的方法,包括以下步骤:将全偏振脉冲仅以线性双折射输入到光纤中。从脉冲输入端解调光纤上不同点的瑞利背散射光的偏振态;解调后,依次将瑞利背散射光的偏振态分为Q组,每三个偏振态分为一组。计算N组的传输矩阵;并利用数值分析方法求解方程组,得到多个解,并根据偏振透射矩阵的特征对多个解进行筛选,每次筛选提供唯一的解M x Sub>(N)方程组不断更新M A Sub>值以进行迭代,以获得光纤的偏振传输矩阵的分布。
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