LiNbO_3电光调制器行波电极微波等效折射率的测量  

MEASUREMENT OF MICROWAVE EQUIVALENT REFRACTIVE INDEX OF TRAVELING WAVE ELECTRODE IN LiNbO_3 ELECTRO-OPTIC MODULATOR

作　　者：廖焕霖[1] 王凌霄[1] 吴伯瑜[1] 高悦广[1] 罗淑云[1] 彭吉虎[1] 沈嘉[1] 宋琼[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《电子与信息学报》2003年第2期284-288,共5页Journal of Electronics & Information Technology

基　　金：国家863计划基金;国家自然科学基金(No:69777006)

摘　　要：LiNbO_3电光调制器的设计中,行波电极的微波等效折射率是一个重要的参数。该文通过自行设计的微波探针架及探针,采用差值的方法,在微波网络分析仪上对样品CPW电极的微波等效折射率进行了测量,分析了实测值与理论计算值的偏差,给出了修正因子,研究了微波等效折射率随频率变化的色散现象,并对这种测量方法进行了误差分析,提出了减小误差的方法。The effective microwave refractive index (Nm) of traveling wave electrode is an important parameter in the designing of LiNbOs electro-optic modulator. A method for mea-kiring Nm is proposed in this paper. The probe frames, microwave probe and three kinds of sample CPW electrodes used in this method are designed and fabricated. The experimental results of Nm in CPW traveling-wave electrode are given. Finally, the errors of the measurement are analyzed.

关 键 词：测量 微波等效折射率 LINBO3电光调制器 行波CPW电极 

分 类 号：TN761[电子电信—电路与系统]