准分形结构光子晶体滤波器层厚误差容限  

Tolerance of Thickness Fluctuations of Quasi-Fractal Photonic Crystal Filter

作　　者：许攀[1] 田慧平[1] 李长红[1] 纪越峰[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《光学学报》2009年第8期2308-2312,共5页Acta Optica Sinica

基　　金：国家973计划(2007CB310705);国家863计划(2007AA01Z247);国家自然科学基金(60707001;60772024);新世纪优秀人才支持计划(NCET-07-0110);教育部"长江学者和创新团队发展计划"(1RT0609)资助课题

摘　　要：为了研究准分形结构光子晶体滤波器制作过程中引入的层厚误差微扰对其性能的影响,并得出准分形结构光子晶体滤波器的层厚误差容限,通过向正负折射率介质层加入不同的层厚微扰,分析了含负材料准分形结构光子晶体滤波器制作过程中的层厚微扰对其性能的影响。得到透射峰移动随介质折射率、介质层层数和层厚微扰大小的变化规律。对每层加入随机几何层厚微扰的情况进行了仿真,得到透射峰移动位置的统计图,并分析了透射峰位置统计数字特征随随机微扰的变化趋势。总结出含负材料准分形结构光子晶体滤波器在密集波分复用(DWDM)通信系统中的随机几何层厚误差容限为0.01 nm。In order to research the influence of layer thickness fluctuations on the performance of quasi-fractal photonic crystal filter and to find out the tolerance of the thickness fluctuations, the influence of layer thickness fluctuation on the filter properties of quasi-fractal photonic crystal filter containing negative material is analyzed through adding different thickness fluctuations both in positive and negative refractive index layers. Laws of the transmission peak shifting with the refractive index, number of the layers and the thickness of layer fluctuation are summarized. The statistic figures of the positions of the transmission peaks are simulated and the statistic feature of the position of the transmission peaks are analyzed when the random geometric thickness fluctuations are added in each layer. The conclusion is that the tolerance of random geometric thickness fluctuation of this kind of photonic crystal filter used in dense wavelength dovision multioplexing （DWDM） optical communication system is only 0.01 nm.

关 键 词：光子晶体 层厚微扰 滤波器 准分形结构 

分 类 号：O734[理学—晶体学]