Single-shot incoherent optical processing of microwave signals: opening the path to low cost high performance analog photonics

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2017,（9）
• 页码范围: 652-653
• 页数: 2页
• 语种: 英文

摘要

Incoherent optical processing of microwave signals,where low-coherence broadband light sources are employed instead of costly mode locked lasers,has attracted great interest thanks to its wide applications in microwave photonics filtering [1-3],arbitrary generation [4-6] and analog to digital conversion [7],among others.However,the conventional incoherent optical processing system is limited by the extremely low signal-to-noise ratio (SNR) [5,8].The poor SNR mainly results from the spontaneous emission in a broadband optical source,e.g.a superluminescent diode (SLD).Thus a single-shot measurement and manipulation is generally impossible using a traditional incoherent optical signal processing system.