Fully-integrated multipurpose microwave frequency identification system on a single chip

Self-learning photonic signal processor with an optical neural network chip

Photonic signal processing is essential in the optical communication and optical computing. Numerous photonic signal processors have been proposed, but most of them exhibit limited reconfigurability and automaticity. A feature of fully automatic implementation and intelligent response is highly desirable for the multipurpose photonic signal processors. Here, we report and experimentally demonstrate a fully self-learning and reconfigurable photonic signal processor based on an optical neural network chip. The proposed photonic signal processor is capable of performing various functions includin…

Reconfigurable On-chip Photoconductive Switches

Microwave photonics uses light to carry and process microwave signals over a photonic link. However, light can instead be used as a stimulus to microwave devices that directly control microwave signals. Such optically controlled amplitude and phase-shift switches are investigated for use in reconfigurable microwave systems, but they suffer from large footprint, high optical power level required for switching, lack of scalability and complex integration requirements, restricting their implementation in practical microwave systems. Here, we report Monolithic Optically Reconfigurable Integrated M…

一种片上系统微波光子处理器以皮秒级延迟实时解决动态射频干扰

A system-on-chip microwave photonic processor solves dynamic RF interference in real time with picosecond latency

本文提出一种基于片上系统的微波光子处理器，利用盲源分离技术在模拟域实现皮秒级延迟的动态射频干扰实时解混，并结合FPGA进行在线权重更新，在雷达高度计和移动通信场景中有效抑制了传输错误并维持了信噪比。

Linearized Integrated Microwave Photonic Circuit for Filtering and Phase Shifting

Photonic integration, advanced functionality, reconfigurability, and high RF performance are key features in integrated microwave photonic systems that are still difficult to achieve simultaneously. In this work, we demonstrate an integrated microwave photonic circuit that can be reconfigured for two distinct RF functions, namely, a tunable notch filter and a phase shifter. We achieved $>$50dB high-extinction notch filtering over 6-16 GHz and 2$π$ continuously tunable phase shifting over 12-20 GHz frequencies. At the same time, we implemented an on-chip linearization technique to achieve a spu…