空气孔型光子晶体带隙及波导耦合特性研究  

Study on band gap and waveguide coupling characteristics of air pattern photonic crystal

作　　者：李未[1] 

机构地区：[1]南昌工程学院理学系,南昌330099

出　　处：《激光技术》2012年第2期228-229,250,共3页Laser Technology

基　　金：江西省自然科学基金资助项目(2010GQW0050);南昌工程学院青年基金资助项目(2010KJ020)

摘　　要：为了研究2维三角晶格空气孔型光子晶体TE模和TM模偏振的禁带宽度与介质柱半径的变化关系,采用平面波展开法数值计算和分析了空气孔型光子晶体的带隙分布及波导耦合特性。结果表明,光子禁带的宽度会随着介质柱半径的大小而变化,束缚在光子晶体中的光波可以在波导和谐振腔中高效率地传输,达到选择输出光波的目的。这种特性在光学集成电路中具有重要而潜在的应用价值。In order to study the relation between band gaps for TM and TE polarization of two dimensional air pattern photonic crystal and dielectric cylinder radius, the band gap distribution and waveguide coupling characteristics of air pattern photonic crystal was simulated with plane-wave expansion method. Results show the photonic crystal band gap varies with the dielectric radius, the optical wave confined in the photonic crystals can efficiently transmit in waveguides and resonator cavity so as to output optical wave selectively. These characteristics have important and potential application in photonic integrated circuits.

关 键 词：集成光学 空气孔型 光子晶体波导 耦合 

分 类 号：TN252[电子电信—物理电子学]