二维光子晶体分束器的分频效率分析  

Frequency Division Efficiency of Two-Dimensional Photonic Crystal Splitter

作　　者：廖兴展[1] 林若波[1] 林少光[1] 

机构地区：[1]揭阳职业技术学院机电系

出　　处：《光谱实验室》2011年第5期2284-2286,共3页Chinese Journal of Spectroscopy Laboratory

基　　金：揭阳职业技术学院科研基金(JYCKY0901)

摘　　要：在完整的二维光子晶体中引入线缺陷,形成了光子晶体波导。设计了一种二维光子晶体三通道分束器,采用时域有限差分方法(FDTD),从理论上计算该器件3个通道电磁波的透射率。为了提高电磁波的透射率,通过在波导附近调节介质柱半径,引入两组点缺陷。结果表明,两组点缺陷的介质柱半径选择合适的值,在3个通道中可以得到最佳的电磁波透射率。Photonic crystal waveguide can be formed when line defect was introduced into the integral two-dimensional photonic crystal.A two-dimensional photonic crystal with three channel beam splitter was designed.the electromagnetic wave transmissivity of the three-channel beam splitter was calculated theoretically by finite-difference time-domain method（FDTD）.In order to improve the electromagnetic wave transmissivity,adjusting the radius of medium rod near the photonic crystal waveguide,and two dot defects were introduced.The radius of medium rod is selected a appropriate value,and the optimal electromagnetic wave transmissivity is obtained in the three-channel.

关 键 词：二维光子晶体 时域有限差分方法 分束器 透射率 

分 类 号：TN256[电子电信—物理电子学]