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Frequency-derived distributed optical-fiber sensing technique: theory and characterization

机译:频率衍生的分布式光纤传感技术:理论与特性

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Frequency-derived distributed optical-fiber sensing is a method for remote measurement of the spatial distribution of linear birefringence in an optical fiber, allowing a corresponding measurement of those external measurands that influence this birefringence. The method employs a pump-probe scheme, which, by use of the optical Kerr effect, generates an optical modulation of the probe beam, with a modulation frequency whose temporal variation maps the spatial distribution of birefringence. We provide a complete theoretical analysis of this method by using Jones calculus and graphic representation on the Poincare sphere. The relevant characterization of the technique and some experimental results are also presented; these show good agreement with the theory.
机译:源自频率的分布式光纤传感是一种用于远程测量光纤中线性双折射的空间分布的方法,可以对影响双折射的外部被测物进行相应的测量。该方法采用泵浦探针方案,该方案通过利用光学克尔效应来产生探测光束的光学调制,该调制频率的调制频率的时间变化映射了双折射的空间分布。我们通过使用Jones微积分和Poincare球面上的图形表示来提供对该方法的完整理论分析。还介绍了该技术的相关特性以及一些实验结果。这些都与理论相吻合。

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