论文部分内容阅读
基于导模共振理论,设计了一种工作中心波长位于632.8nm的宽带宽透射型滤波器.根据瑞利异常理论公式,计算得到瑞利波长所在的光谱位置,从而证明异常现象对滤波器的带宽产生了拓宽作用.为了优化宽带宽滤波器的结构参数,利用严格耦合波理论通过计算不同参数条件下的光谱,分析了结构参数和材料对于透射光谱在带宽和峰值效率方面的影响,选取其中最佳的结构参数数值和材料,得到峰值效率为90%、带宽为95nm的透射光谱.该宽带宽透射型导模共振器件在显示和成像领域有潜在的应用价值.
Based on guided-mode resonance theory, a wideband transmission filter with a working center wavelength of 632.8nm was designed. According to the Rayleigh anomalous theoretical formula, the spectral position where the Rayleigh wavelength is located is calculated, which proves the effect of the anomaly on the bandwidth of the filter In order to optimize the structure parameters of wideband filter, the influence of structure parameters and materials on the bandwidth and peak efficiency of transmission spectrum is analyzed by using the strict coupled-wave theory by calculating the spectrum under different parameters. Good structure parameter value and material, the transmission spectrum with the peak efficiency of 90% and the bandwidth of 95nm is obtained.This wide bandwidth transmissive guided mode resonant device has potential applications in the field of display and imaging.