基于互补调制的多通道连续型PTS-ADC系统  

Multi-Channel Continuous-Time PTS-ADC System Based on Complementary Modulation

作　　者：王俊达 陈颖 陈向宁 Wang Junda;Chen Ying;Chen Xiangning(Graduate School, Academy of Equipment, Beijing 101416, China;Department of Photoelectric Equipment, Academy of Equipment, Beijing 101416, China)

机构地区：[1]装备学院研究生院,北京101416 [2]装备学院光电装备系,北京101416

出　　处：《激光与光电子学进展》2018年第2期123-130,共8页Laser & Optoelectronics Progress

基　　金：国家863计划(2015AA7031093C)

摘　　要：设计了基于时间波长交织技术的多通道连续型光子时间拉伸模数转换(PTS-ADC)系统。研究了互补型双马赫-曾德尔调制器(MZM)结构对多通道连续型PTS-ADC的性能影响。通过理论推导验证了互补型双MZM抑制PTS-ADC中二阶谐波产生的原理。设计了一种基于互补型双MZM的连续型PTS-ADC系统,利用Optisystem软件对该系统进行仿真研究,对频率为6 GHz的射频(RF)信号进行模数转换。仿真结果表明,基于互补调制的多通道连续型PTS-ADC系统可以对RF信号实现降频处理及连续采样,实现了4.69的有效量化位数。A multi-channel continuous photonic time-stretched analog-to-digital converter （PTS-ADC） system based on the time and wavelength interweaved technology is designed. And the effect of complementary dual Mach- Zehnder modulator （MZM） structure on PTS-ADC is studied. The principle of complementary dual-MZM which can suppress second-order harmonic in PTS-ADC is verified by theoretical deduction. A continuous PTS-ADC system based on complementary dual-MZM is designed. We simulate the analog to digital conversion of 6 GHz radio frequency （RF） signal by Optisystem. The simulational results show that the system can realize the down- conversion processing and continuous sampling of the RF signal, and the effective number of bits （ENOB） of 4.69 is achieved.

关 键 词：光通信 模数转换器 光子时间拉伸 互补调制 二阶谐波抑制 

分 类 号：TN929[电子电信—通信与信息系统]