Bebbington D H, Siddiqui A S
Department of Electronic Systems Engineering, University of Essex, Colchester, UK.
J Opt Soc Am A Opt Image Sci Vis. 2000 Dec;17(12):2260-6. doi: 10.1364/josaa.17.002260.
We present a detailed derivation of the locus of Rayleigh backscattered states of polarization for polarization optical time domain reflectometry in uniformly twisted optical fiber with intrinsic linear birefringence. The locus is algebraically a quartic whose topology is determined by the relative orientation on the Poincaré sphere of the input SOP and the effective birefringence vector. We present an analysis that indicates how experimental data may be interpreted, through geometric parameters of the locus, for evaluating the fiber parameters. The analysis also indicates the minimum number of experimental data points required for meaningful values for the fiber parameters to be obtained.
我们给出了在具有固有线性双折射的均匀扭曲光纤中，用于偏振光时域反射仪的瑞利背向散射偏振态轨迹的详细推导。该轨迹在代数上是一个四次曲线，其拓扑结构由输入偏振态（SOP）和有效双折射矢量在庞加莱球面上的相对取向决定。我们进行了一项分析，该分析表明如何通过轨迹的几何参数来解释实验数据，以评估光纤参数。该分析还指出了为获得有意义的光纤参数值所需的最少实验数据点数。
