摘要
基于自成像效应(SIE)的多模干涉(MMI),设计了一种二维光子晶体波导二端口分波器。采用时域有限差分法和平面波法作为研究工具,从理论上分析了这种器件的特性,在一定耦合长度下研究光在输出端的透射率,结果表明,选择适当的耦合长度可以使光在两个端口高效率输出。进一步研究得知,通过改变器件内部一个介质柱的半径,可以提高光在输出端的透射率。
A two port wavelength division device in two-dimensional photonic crystals wave-guide is designed based on self-imaging effect of multimode interference. The optical properties of two port wavelength division device have been demonstrated theoretically by finite-difference time-domain method and plane wave method, in addition we study the transmission rate in the output port of this device under a given coupling length, the result indicate that choosing the appropriate coupling length can make light to export in the two output ports. Further research shows, the transmission rate in the output port of this device can be improved by changing the radius of a medium rod in photonic crystals.
出处
《光通信技术》
CSCD
北大核心
2008年第3期23-25,共3页
Optical Communication Technology
基金
江西省自然科学基金(0612043
2007GZW2547)资助
江西省教育厅重点项目(赣教技字[2006]15号)资助
江西省科技攻关项目资助
关键词
二维光子晶体波导
多模干涉
平面波法
时域有限差分法
two-dimensional photonic crystal wave-guide
multimode interference
plane wave method
finite-difference time-domain method
