Long-Range Microwave Links Guided by Evaporation Ducts

A range of frequencies supporting low path loss ducting over microwave links at beyond-line-of-sight distances beyond 100 km have been demonstrated theoretically and experimentally. Three experimen…

Principles, Measurements and Suppressions of Semiconductor Laser Noise—A Re…

Semiconductor lasers are widely used in incoherent/coherent optical communications, optical fiber sensing, and lidar due to their small size, high efficiency, and immunity to vibrations. To support…

AP-Loss for Accurate One-Stage Object Detection

One-stage object detectors are trained by optimizing classification-loss and localization-loss simultaneously, with the former suffering much from extreme foreground-background class imbalance issu…

Current-Modulated Cavity Ring-Down Spectroscopy for Mobile Monitoring of Natu…

An improved current-modulated cavity ring-down spectroscopy(CRDS) approach is proposed and the experimental results reported in this article. The step-wise fine current modulation is imposed on the…

Microwave Photonics Time-Delayed Mixer

In this paper, an efficient photonics time-delayed mixer (PTDM) is proposed and demonstrated. It mainly consists of a dual-parallel Mach-Zehnder modulator (DPMZM) and a dispersion medium (DM). To e…

Differentiator-Based Photonic Instantaneous Frequency Measurement for Radar W…

All-Optical Transparent Forwarding Relay System for Interstellar Optical Comm…

Compound Control of Electromagnetic Linear Actuator Based on Fuzzy Switching

Analysis and Modeling of Crossing Behavior at Urban Intersections in China

Long-term behavior of composite beams under positive and negative bending : I…