Low-cost compressive sensing imaging based on spectrum-encoded time-stretch structure

作者：Wang, Guoqing; Shao, Liyang^*; Liu, Yibing; Xu, Weijie; Xiao, Dongrui; Liu, Shuaiqi; Hu, Jie; Zhao, Fang; Shum, Ping; Wang, Weizhi; Zhou, Yuan; Min, Rui; Wang, Chao

来源：Optics Express, 2021, 29(10): 14931-14940.

DOI：10.1364/OE.421055

• MICROSCOPY

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. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.

• 单位
  南方医科大学