基于光学偏置的聚合物电光调制器研究  

Investigation of the polymer electro-optic modulator based on optical bias

作　　者：文玥[1] 张晓霞[1] 刘华东[1] 黄春阳[1] 沈杰[1] 

机构地区：[1]电子科技大学光电信息学院,川成都610054

出　　处：《激光与红外》2011年第4期455-458,共4页Laser & Infrared

基　　金：国家高技术研究发展计划"863"新材料领域课题(No.2009AA03Z413)资助

摘　　要：分析了两种使Mach-Zehnder调制器实现光学偏置的方法,即路径非对称和折射率非对称的波导设计。采用有限差分束传播法(FD-BPM)对两种基于光学偏置的Mach-Zehnder型电光调制器进行了模拟仿真研究,仿真结果显示两种光学偏置方法均实现了在转换函数的线性区域建立工作点的目标,并且分别得到了26 dB和23 dB的消光比输出。The path asymmetrical and refractive index asymmetrical design for optical waveguide methods have been introduced which can make the Mach-Zehnder modulator to achieve optical bias.The simulation studies of the two kinds of optical bias methods are based on finite difference-beam propagation method（FD-BPM）.The results show that both the two methods can make the Mach-Zehnder modulators to be biased at half-power point in the most linear region.The initial phase difference of the two arms can reach around π/2,and the extinction ratios are 26 dB and 23 dB respectively.

关 键 词：电光调制器 光学偏置 路径非对称 折射率非对称 

分 类 号：TN911.3[电子电信—通信与信息系统]