Open AccessDetecting fast signals beyond bandwidth of detectors based on computational temporal ghost imaging
Author(s) -
Yuanxi Xu,
Shi-Hai Sun,
Weitao Liu,
Guang-Zhao Tang,
Jiying Liu,
PingXing Chen
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.000099
Subject(s) - detector , bandwidth (computing) , computer science , optics , ghost imaging , detection theory , signal processing , physics , telecommunications , digital signal processing , computer hardware
Measurement of fast signal is getting more and more important in many fields. In this paper, we propose to detect a temporal signal based on the idea of computational ghost imaging (GI), which can greatly reduce requirements on bandwidth of detectors. In experiments, we implement retrieving of a temporal signal with time scale of 50ns using a detector of 1kHz bandwidth, which is much lower than the requirement on bandwidth of detector according to information theory. The performance of our technique are also investigated under different detection bandwidths.