160 GHz带宽LiNbO_3电光调制器微波损耗的限制  

Losses limitation on the Bandwidth of 160 GHz LiNbO_3 Optical Modulator

作　　者：周伟勤[1] 吴伯瑜[1] 彭吉虎[1] 易鸿[1] 张兵[1] 宋琼[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《光电子．激光》2001年第6期608-610,共3页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(69777006)

摘　　要：本文通过模拟 L i Nb O3电光调制器的电传输特性 ,提出了厚电极共面波导 (CPW)行波电极微波损耗的经验公式 ,在此基础上研究了带宽为 16 0 GHz的调制器的微波损耗因素。结果表明 ,辐射损耗将占重要地位 ,而且小的电极尺寸更易实现宽带调制。The microwave propagation characteristics of a coplanar waveguide (CPW) electrode on LiNbO3 optical modulator are studied and a empirical formula of the microwave loss is proposed based on experimental data. The microwave loss requirement on a 160 GHz LiNbO3 modulator is also studied. The results show that the radiation loss is the major factor, and it is preferable to use small size of the electrode for wide bandwidth modulation.

关 键 词：带宽 调制器 微波损耗 共面波导 

分 类 号：TN761[电子电信—电路与系统]