Broadband Frequency Down-Conversion Using Coupled Cavity Structures in One-Dimensional Photonic Crystals  

作　　者：李文慧 陈历学 汤冬华 丁卫强 刘树田 

机构地区：[1]Department of Physics, Harbin Institute of Technology, Harbin 150001

出　　处：《Chinese Physics Letters》2006年第4期845-848,共4页中国物理快报（英文版）

摘　　要：The frequency down-conversion of one-dimensional photonic crystals with the coupled cavity structure is investigated by the nonlinear finite-difference time-domain method. The efficient frequency conversion is obtained by utilizing the advantages of the broad eigenfrequency band, the strong localization and the Bloch phase matching of the coupled cavity structure. More importantly, the signal frequency could be tuned continuously within the whole band of the coupled cavity structure （with a bandwidth to central frequency ratio of 5.4%）, and the gains are homogeneous in the band.The frequency down-conversion of one-dimensional photonic crystals with the coupled cavity structure is investigated by the nonlinear finite-difference time-domain method. The efficient frequency conversion is obtained by utilizing the advantages of the broad eigenfrequency band, the strong localization and the Bloch phase matching of the coupled cavity structure. More importantly, the signal frequency could be tuned continuously within the whole band of the coupled cavity structure （with a bandwidth to central frequency ratio of 5.4%）, and the gains are homogeneous in the band.

关 键 词：2ND-HARMONIC GENERATION GAP STRUCTURES FINITE 

分 类 号：O43[机械工程—光学工程]