这份报纸用多层的亚波长建议了一个新奇宽带过滤器高对比的栅栏(HCG ) 结构。这个过滤器有宽带宽和好边带抑制。我们在过滤宽带过滤器的性能上模仿了并且分析层和不同栅栏索引的不同数字的效果。根据模仿的结果,我们设计了一个多层的 HCG 宽带过滤器,它有 843 nm 的带宽和 1550 nm 的中心波长。
This paper proposed a novel broadband filter using multi-layer sub-wavelength high-contrast grating (HCG) structure. This filter has wide bandwidth and good sideband suppression. We simulated and analyzed the effects of different numbers of layers and different grating indexes on filtering performance of the broadband filter. According to the simulated results, we designed a multi- layer HCG broadband filter, which has bandwidth of 843 nm and center wavelength of 1550 nm.