Wideband signal detection based on high-speed photonic analog-to-digital converter

被引：14

作者：

Yang, Guang ^{[1
]}

Zou, Weiwen ^{[1
]}

Yuan, Ye ^{[1
]}

Chen, Jianping ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2018年 / 16卷 / 03期

基金：

中国国家自然科学基金;

关键词：

MICROWAVE SIGNALS; RESOLUTION; RADAR;

D O I：

10.3788/COL201816.030601

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This Letter demonstrates the effectiveness of a high-speed high-resolution photonic analog-to-digital converter (PADC) for wideband signal detection. The PADC system is seeded by a high-speed actively mode locked laser, and the sampling rate is multiplied via a time-wavelength interleaving scheme. According to the laboratory test, an X-band linear frequency modulation signal is detected and digitized by the PADC system. The channel mismatch effect in wideband signal detection is compensated via an algorithm based on a short-time Fourier transform. Consequently, the signal-to-distortion ratio (SDR) of the wideband signal detection is enhanced to the comparable SDR of the single-tone signal detection.

引用

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