Ross J N
Central Electricity Generating Board, Central Electricity Research Laboratories, Leatherhead, Surrey KT22 7SE, UK.
Appl Opt. 1982 Oct 1;21(19):3489-95. doi: 10.1364/AO.21.003489.
The technique of polarization-optical time-domain reflectometry is analyzed to see how the polarization properties of an optical fiber may be deduced from the backscattered light. It is shown that, subject to certain assumptions, the polarization is modified as it would be by a linear retarder. The results of measurements on a fiber showing both linear and circular retardation are given and compared with a theoretical model. The experiments show that the accuracy of measurement is limited by changes in the polarization, due to the scattering process, which vary randomly along the fiber.
对偏振光时域反射测量技术进行了分析，以了解如何从背向散射光中推断出光纤的偏振特性。结果表明，在某些假设条件下，偏振的变化就如同被一个线性延迟器改变一样。给出了对一根同时表现出线性和圆偏振延迟的光纤的测量结果，并与理论模型进行了比较。实验表明，测量精度受到散射过程引起的偏振变化的限制，这种变化沿光纤随机变化。
