Bidirectionally tunable all-optical switch based on multiple nano-structured resonators using backward quasi-phase-matching  

作　　者：谢俊 陈玉萍 陆闻杰 陈险峰 

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

出　　处：《Chinese Optics Letters》2011年第4期83-86,共4页中国光学快报（英文版）

基　　金：supported by the National "863" Program of China (No. 2007AA01Z273);the National Natural Science Fundation of China (No. 10874120);the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of Education of China

摘　　要：Based on the second-order nonlinearity, we present a bidirectional tunable all-optical switch at C-band by introducing backward quasi-phase-matching technique in Mg-doped periodically poled lithium niobate （MgO：PPLN） waveguide with a nano-structure called multiple resonators. Two injecting forward lights and one backward propagating light interact with difference frequency generations. The transmission of forward signal and backward idler light can be modulated simultaneously with the variation of control light power based on the basic ＂phase shift＂ structure of a single resonator. In this scheme, all the results come from our simulation. The speed of this bidirectional optical switch can reach to femtosecond if a femtosecond laser is used as the control light.Based on the second-order nonlinearity, we present a bidirectional tunable all-optical switch at C-band by introducing backward quasi-phase-matching technique in Mg-doped periodically poled lithium niobate （MgO：PPLN） waveguide with a nano-structure called multiple resonators. Two injecting forward lights and one backward propagating light interact with difference frequency generations. The transmission of forward signal and backward idler light can be modulated simultaneously with the variation of control light power based on the basic ＂phase shift＂ structure of a single resonator. In this scheme, all the results come from our simulation. The speed of this bidirectional optical switch can reach to femtosecond if a femtosecond laser is used as the control light.

关 键 词：LITHIUM NANOSTRUCTURES Niobium compounds Phase matching Resonators 

分 类 号：O437[机械工程—光学工程]