摘要
Abstract
Optic polarization states of sensing light wave in Sagnac fiber optic current transformer are limited.Howev-er, several factors including polarizer, quarter-wave retarder, splice angular, and so on will induce optic polarization error, and non-ideal polarized light waves will cause the interference signal crosstalk in transformer.Focused on char-acteristics of optical polarization error in fiber optic current transformer, we build optical polarization error models by using Jones matrix, then, analyze the evolution process of linear optic polarization state and circular optic polarization state in Sagnac fiber optic current transformer.Based on models of polarization state in Sagnac fiber optic current transformer, we investigate the influence of several main error factors on optical polarization error characteristics and performance theoretically, including extinction ratio in polarizer, splice angular between quarter-wave retarder and po-larization maintaining fiber, and phase delay in quarter-wave retarder.关键词
光纤电流互感器/偏振误差/非互易相位/偏振态Key words
fiber optic current transformer/polarization error/nonreciprocal phase shift/optic polarization state分类
信息技术与安全科学
