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1. (WO2018176518) COHERENT PHOTONIC ANALOG-TO-DIGITAL CONVERTER

Pub. No.:    WO/2018/176518    International Application No.:    PCT/CN2017/080975
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Wed Apr 19 01:59:59 CEST 2017
IPC: G02F 7/00
Applicants: SHANGHAI JIAO TONG UNIVERSITY
上海交通大学
Inventors: ZOU, Weiwen
邹卫文
YANG, Gang
杨光
YU, Lei
于磊
QIAN, Na
钱娜
CHEN, Jianping
陈建平
Title: COHERENT PHOTONIC ANALOG-TO-DIGITAL CONVERTER
Abstract:
A coherent photonic analog-to-digital converter, comprising: an optical clock oscillation source (1), a signal source (4) to be sampled, a photonic sampling gate (3), a photoelectric detection module (5), an electrical sampling module (7), a phase detection module (9), a loop filter (10), and signal feedback links (11, 12). Clock jitter is reduced by adjusting the optical clock oscillation source (1) or the signal source (4) to be sampled to enable high coherence thereof, thus significantly improving sampling accuracy. This is a key factor in improving the performance of microwave photonic systems requiring a high temporal and sampling precision, such as a microwave photonic radar and optical communication system.