In 490 BC, the Persian Army landed on the plain of Marathon, 25 miles from Athens. The Athenians sent a messenger named Feidipides to Sparta to ask for help. He ran the 150 miles in two days. The ...

Abstract: We report a casceded compact hybrid discrete Raman amplifier based on a bismuth-doped fiber and a $2\times 1$-km photonic crystal fiber, which enables broadband amplification in the 157-nm S ...

Abstract: Silicon photonics is developing rapidly for the operation at the wavelength-bands of 1.31/1.55 μm as well as 2 μm. One of the most fundamental tasks is to develop low-loss silicon photonic ...

We have tried and tested dozens of fitness trackers, smartwatches and smart rings — these are the top 12 wearables that should land in your cart this January. When you purchase through links on our ...