介绍了光纤滤波器的原理、结构及主要应用,提出了级联设计滤波器的概念。在总结典型级联式滤波器的基础上,详细分析了其结构设计及工作原理,评述了其优缺点。结合微结构光纤(MOF)及光栅的特殊性质,阐述了典型的微结构光纤滤波器的结构设计及工作原理,展示了其典型应用。提出了级联微结构光纤及光栅设计滤波器方案,展望了光纤滤波器的发展,并指出了进一步拓展及应用的方向。

The principle, structure and application of fiber optical filter are introduced, and a significant conception of cascaded fiber optical filter is proposed. Its structural and working principle are observed in detail, on the base of summing up typical cascaded fiber filters. The structural design and working principle of microstructure optical fiber (MOF) and microstructure optical fiber grating (MOFG) are demonstrated, by analyzing the particular properties of them. And their application in the design of the fiber optical filters is summarized. The scheme of MOF and MOFG cascaded filter is proposed, and its future development is presented. It can broaden the category of filter scheme and make the configuration of the filter variable.