基于周期性极化铌酸锂晶体的电光开关(英文)  

Electro-Optic Switch by Use of Polarization Coupling in Periodically Poled Lithium Niobate

作　　者：陈险峰[1] 刘坤[1] 石剑虹[1] 

机构地区：[1]上海交通大学物理系,区域光纤通信网和新型光通信系统国家重点实验室,上海200240

出　　处：《江西师范大学学报（自然科学版）》2009年第5期577-581,共5页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：Supported by the National Natural Science Foundation of China(10734080,10876006);the National Basic Research Program“973”of China(2006CB806000);the Shanghai Leading Academic Discipline Project(B201)

摘　　要：从理论和实验上阐述了基于周期性极化铌酸锂晶体的电光开关.实验中,我们观察到周期为21μm周期性极化铌酸晶体中的Solc滤波光谱.当调节施加在晶体Y方向的电场大小时,滤波的中心波长处的光强变化可达到39.23 dB,从而实现了一个高消光比的电光开关.We demonstrate a compact electro-optic switch with high extinction ratio in periodically poled lithium niobate（PPLN）.During the experiment,a PPLN crystal,with the period of 21 μm,is placed between crossed polarizer.By tuning the applied electric field along the Y-axis of the PPLN,the light intensity of the operating wavelength shifts with 43 dB extinction ratio,which can serve as a high speed electro-optic switch.

关 键 词：电光效应 光开关 铌酸锂 

分 类 号：O436.4[机械工程—光学工程]