Spurious-free dynamic range improvement in a photonic time-stretched analog-to-digital converter based on third-order predistortion  

作　　者：Boyu Xu Wulue Lv Jiamu Ye Jinhai Zhou Xiaofeng Jin Xianmin Zhang Hao Chi Shilie Zheng 

机构地区：[1]Department of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027,China

出　　处：《Photonics Research》2014年第5期97-101,共5页光子学研究（英文版）

基　　金：the National Basic Research Program of China(973 Program)(Grant No.2012CB315703);the Natural Science Foundation of China(Grant Nos.61371029 and 60971060).

摘　　要：Spurious-free dynamic range(SFDR)limited by intermodulation distortions is a usually accepted measure for dynamic performance of a photonic time-stretched analog-to-digital converter(ADC).In this paper,SFDR improvement in a photonic time-stretched ADC based on third-order predistortion is proposed.The third-order predistortion is achieved optically within an integrated dual-parallel Mach–Zehnder modulator(DPMZM).The mechanism of SFDR improvement with third-order predistortion in the DPMZM is theoretically analyzed.Compared with a conventional scheme without predistortion,the experimental results show that the SFDR improvement of∼26 dB in the proposed scheme is proved.

关 键 词：CONVERTER MODULATOR SFDR 

分 类 号：TN7[电子电信—电路与系统]