Open AccessLow-cost compressive sensing imaging based on spectrum-encoded time-stretch structure
Author(s) -
Guoqing Wang,
Liyang Shao,
Yibing Liu,
Weijie Xu,
Dongrui Xiao,
Shuaiqi Liu,
Jie Hu,
Fang Zhao,
Ping Shum,
Weizhi Wang,
Yuan Zhou,
Rui Min,
Chao Wang
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.421055
Subject(s) - computer science , optics , astronomical interferometer , compressed sensing , spectral imaging , interferometry , physics , algorithm
A low-cost compressive sensing imaging (CSI) system based on spectrum-encoded time-stretch (SETS) structure involving cascaded Mach-Zehnder Interferometers (MZIs) for spectral domain random mixing (also known as the optical random pattern generator) is proposed and experimentally demonstrated. A proof-of-principle simulation and experiment is performed. A mode-locked laser with a repetition rate of 50MHz and low-cost cascaded MZIs as the key devices enable fast CSI system. Data compression ratio from 6% to 25% are obtained using proposed CSI based SETS system. The proposed design solves the big data issue in the traditional time-stretch system. It has great potential in fast dynamic phenomena with low-cost and easy-access components.