一种基于Labview快速实现电光调制器射频阻抗匹配的方法  

Fast Implementation of Impedance Matching for Electro-Optic Modulator Based on Smith Chart and Labview

作　　者：刘鑫鑫[1] 张鹏飞[1] 李刚[1] 张天才[1] 

机构地区：[1]量子光学与光量子器件国家重点实验室,山西大学光电研究所,山西太原030006

出　　处：《山西大学学报（自然科学版）》2013年第1期49-55,共7页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(11125418;10974125;61121064);国家973课题(2012CB921601)

摘　　要：电光调制器在量子光学、原子物理、激光光谱、光学控制和测量等许多方面具有广泛的应用,其射频阻抗匹配是重要的技术问题.文章在现有常用的射频匹配方法的基础上,运用Smith圆图,提出了一套简单快速实现电光调制器射频阻抗匹配的方法,包括网络构建的分析、设计并完成了在Labview环境下运用Smith图对电光调制器射频阻抗匹配网络设计的程序等.在此基础上,采用Newfocus 4002和Thorlabs公司的两种不同的电光调制器进行了实验.实验结果表明,在设计频率53.047MHz和97.977MHz处,匹配效率可以达到99.05%和95.6%.Electro-optic modulator （EOM） has been widely used in many fields,such as optical communica- tions, optical control and measurement and it is also used for quantum optics, atomic physics, laser spectros- copy,etc. The RF impedance matching of the EOM is an important technical issue. Based on the usual RF matching principle and method, and by using the Smith Chart,we propose a set of reliable and rapid method of RF impedance matching for an EOM,which includes the analysis of a network construction,the design procedures by using Smith chart in LABVIEW environment. We demonstrate the method on two EOMs from New Focus 4002 and Thorlabs The results show that the impedance matching efficiencies are 99.5 and 95.6% at the design frequency of 53. 047 MHz and 97. 977 MHz,respectively.

关 键 词：电光调制器 射频阻抗匹配 Smith图 LAVIEW 

分 类 号：O431[机械工程—光学工程]