Multi-wavelength photonic band gaps based on quasi-periodically poled lithium niobate ordered in Fibonacci sequences  

作　　者：周琢尔 石剑虹 陈险峰 

机构地区：[1]Department of Physics,The State Key Laboratory on Fiber-Optic Local Area Network and Advanced Optical Communication Systems,Shanghai Jiao Tong University

出　　处：《Chinese Optics Letters》2009年第6期508-511,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.60508015 and 10876019);the National "973" Program of China (No.2007CB307000);the Shanghai Education Development Foundation (No.2007CG015);the Shanghai Leading Academic Discipline Project (B201)

摘　　要：We demonstrate a quasi-periodic structure exhibiting multiple photonic band gaps （PBGs） based on sub- micron-period poled lithium niobate （LN）. The structure consists of two building blocks, each containing a pair of antiparallel poled domains, arranged as a Fibonacci sequence. The gap wavelengths are analyzed with the Fibonacci sequence parameters such as the quasiperiodic indices and the average lattice parameter. The transmission properties are investigated by a traditional 4×4 matrix method. It has also been proved that the gap depth can be tuned by the lengths of poled domains.We demonstrate a quasi-periodic structure exhibiting multiple photonic band gaps （PBGs） based on sub- micron-period poled lithium niobate （LN）. The structure consists of two building blocks, each containing a pair of antiparallel poled domains, arranged as a Fibonacci sequence. The gap wavelengths are analyzed with the Fibonacci sequence parameters such as the quasiperiodic indices and the average lattice parameter. The transmission properties are investigated by a traditional 4×4 matrix method. It has also been proved that the gap depth can be tuned by the lengths of poled domains.

关 键 词：Energy gap LITHIUM Niobium compounds Photonic band gap PHOTONICS 

分 类 号：O614.111[理学—无机化学]