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本文对用于光纤波导模式分析的空间滤波法进行了细致的理论分析。得到了普适的滤波条件。作为应用方面的特例,讨论了研究光纤微弯耦合效应的实验方法。
In this paper, a detailed theoretical analysis of the spatial filtering method used in fiber waveguide mode analysis is carried out. Get the universal filter conditions. As a special case of application, the experimental method for studying the micro-bending coupling effect of optical fiber is discussed.