多平行光子晶体波导耦合分束器  

Multiple parallel photonic crystals coupling of power splitter

作　　者：李未[1] 陈小玲[1] 何玉平[1] 徐旭明[2] 

机构地区：[1]南昌工程学院理学系,南昌330099 [2]南昌大学物理系,南昌330031

出　　处：《光通信技术》2010年第6期18-20,共3页Optical Communication Technology

基　　金：江西省自然科学基金(0612043;2007GZW2547)资助

摘　　要：将多光子晶体单模波导平行、邻近放置构成定向耦合器。基于自成像效应的波导多模偶合,提出了一种二维光子晶体波导四端口分束器。采用时域有限差分法和平面波法作为研究工具,在偶合长度L=7a的长度下,研究了调节介质柱半径R,使耦合区电磁场的相位分布发生变化,从而实现四个输出端口的光强度自由分配。Directional coupler can be constructed by putting multiple photonic crystal waveguides together. In this letter, a 4-port two-dimensional photonic crystals splitter is proposed on the basis of multimode interference effect and self-imaging principle. The optical properties of the 4-port coupler device have been demonstrated finite-difference time-domain （FDTD） and plane-wave expansion method （PCW）. We study to change the medium pole radius R in the coupling length L=7a, making the electromagnetic wave of coupling change to adjust the intension distributing of the four out put ports.

关 键 词：分束器 耦合 光子晶体波导 能量均分 

分 类 号：TN929.11[电子电信—通信与信息系统]