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.

中文翻译：

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基于频谱编码时间拉伸结构的低成本压缩传感成像

提出了一种基于频谱编码时间拉伸（SETS）结构的低成本压缩传感成像（CSI）系统，该系统包括级联的Mach-Zehnder干涉仪（MZI），用于频谱域随机混合（也称为光学随机码型发生器），并且实验证明。进行原理证明的仿真和实验。锁模激光器具有50MHz的重复频率和低成本的级联MZI作为关键设备，可实现快速CSI系统。使用建议的基于CSI的SETS系统可获得6％至25％的数据压缩率。提出的设计解决了传统时间拉伸系统中的大数据问题。它具有低成本和易于访问的组件，在快速动态现象中具有巨大的潜力。