As gardeners start mapping out their plans for the upcoming spring season, many will spot annoying moss patches that have cropped up during the cold, soggy winter. Moss flourishes in moist ...

Abstract: We introduce a method to measure the Rayleigh signature of an optical fiber, which is defined as the frequency dependence of the backscattering from each position along its length. The ...

Abstract: To address the problem that the low Rayleigh scattering intensity in single-mode fiber (SMF) limits the development of optical frequency domain reflectometry (OFDR) system. we introduce a ...

Researchers show that ordinary WiFi signals can be used to create camera-like images of people in their surroundings, even if those people are not carrying active devices. Credit: Shutterstock ...