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Spectral response of fiber-coupled Fabry-Perot etalons

机译:光纤耦合法布里-珀罗标准具的光谱响应

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摘要

In many remote sensing applications one or multiple Fabry-Perot etalons are used as high-spectral-resolution filter elements. These etalons are often coupled to a receiving telescope with a multimode fiber, leading to subtle effects of the fiber mode order on the overall spectral response of the system. A theoretical model is developed to treat the spectral response of the combined system: fiber, collimator, and etalon. The method is based on a closed-form expression of the diffracted mode in terms of a Hankel transform. In this representation, it is shown how the spectral effect of the fiber and collimator can be separated from the details of the etalon and can be viewed as a mode-dependent spectral broadening and shift.
机译:在许多遥感应用中,一个或多个Fabry-Perot标准具用作高光谱分辨率的滤光片。这些标准具通常通过多模光纤耦合到接收望远镜,从而导致光纤模阶对系统整体频谱响应的微妙影响。建立了一个理论模型来处理组合系统的光谱响应:光纤,准直仪和标准具。该方法基于关于汉克尔变换的衍射模式的闭合形式表示。在该图示中,示出了如何将光纤和准直仪的光谱效应与标准具的细节分开,以及如何将其视为与模式相关的光谱展宽和偏移。

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