从双层结构出发研究了一种由多块不同的单周期光子晶体组合而成的多层结构的滤波器,论述了这种滤波器的工作原理.研究表明这种结构适于制作带通、窄带通过、带阻、宽带带阻、高通以及其它各种性能的滤波器.实验和理论研究的结果相一致.

A new optical-filter structure consisted of a number of pieces of 1-D photonic crystals, each of which with a different lattice constant, and its operation mechanism are presented. Numerical and experimental studies are performed and their results are in good accordance with each other. This structure can be applied to build different kind of filters, such as low-pass filters, band-pass filters, narrow-band-pass filters and high-pass filters, etc. Extraordinary wide band-stop and extremely narrow band-pass filters can be easily realized with such a structure.