发光学报2016，Vol.37Issue(6)：758-763,6.DOI:10.3788/fgxb20163706.0758
基于侧向PN结和交趾型PN结的硅基Mach-Zehnder调制器的二阶谐波失真特性
Second Harmonic Distortion Comparison of Mach-Zehnder Silicon Modulators Based on Lateral and Interdigitated PN Junctions
摘要
Abstract
Electro-optic modulators with high linearity are core devices of microwave photonic link. The modulation mechanism of the silicon optical modulator is based on the carrier dispersion effect which is nonlinear and its nonlinearity is highly related to the structure of PN junction. In this pa-per, the second-order spurious-free dynamic range ( SFDR2 ) is introduced to characterize the second harmonic distortion ( SHD ) of modulators. The SHD of silicon optical Mach-Zehnder modulator ( MZM) based on two most widely used doping patterns, i. e. , the lateral and the interdigitated PN junctions are compared with each other. The experimental results show that the lateral PN junction and interdigitated PN junction based MZMs have SFDR2 of 85. 11 dB·Hz1/2 and 78. 44 dB·Hz1/2 , respectively. The lateral PN junction based MZM has a better linearity.关键词
微波光子链路/硅基高速调制器/二阶谐波失真/二阶无杂散动态范围Key words
microwave photonic link/silicon-based high-speed optical modulator/second harmonic distortion/sec-ond-order spurious-free dynamic range分类
信息技术与安全科学引用本文复制引用
戚伟,邵海峰,余辉,江晓清..基于侧向PN结和交趾型PN结的硅基Mach-Zehnder调制器的二阶谐波失真特性[J].发光学报,2016,37(6):758-763,6.基金项目
国家自然科学基金(61307074) （61307074）
浙江省公益技术应用研究计划(2014C33026)资助项目 （2014C33026）
