Correction of timing mismatches between two channels for photonic analog-to-digital converters  

作　　者：ZHANG He WU Gui-ling WANG Cheng CHEN Jian-ping 张贺;吴龟灵;王成;陈建平

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University

出　　处：《Optoelectronics Letters》2018年第6期429-433,共5页光电子快报（英文版）

基　　金：supported partly by the National Natural Science Foundation of China(Nos.61535006 and 61627817)

摘　　要：This paper presents a scheme to identify and compensate the timing mismatches between two channels for tipme interleaved photonic analog-to-digital converters(TIPADCs). The impact of electro-optic sampling is removed by preprocessing firstly. Then a calibration method combining chopping processing and a Hilbert transform is proposed to identify the timing mismatches, which can be further compensated by using various mature compensation algorithms. The principle of the proposed method is derived theoretically. The performance of the scheme is analyzed by simulation. The results show that the harmonic induced by timing mismatches can be suppressed by more than 30 dB using the proposed correction scheme.This paper presents a scheme to identify and compensate the timing mismatches between two channels for tipme interleaved photonic analog-to-digital converters(TIPADCs). The impact of electro-optic sampling is removed by preprocessing firstly. Then a calibration method combining chopping processing and a Hilbert transform is proposed to identify the timing mismatches, which can be further compensated by using various mature compensation algorithms. The principle of the proposed method is derived theoretically. The performance of the scheme is analyzed by simulation. The results show that the harmonic induced by timing mismatches can be suppressed by more than 30 dB using the proposed correction scheme.

关 键 词：CORRECTION PHOTONIC analog-to-digital CONVERTERS TIMING 

分 类 号：TN[电子电信]