Leading subsea communication solution provider, Xtera and UCL (University College of London) demonstrated high-capacity optical transmission over 6,300 kilometers transatlantic fiber link. The experiment recorded a transmission rate of 74.38 Terabits per second over Sumitomo’s single mode Optical fibers. The demonstration was part of Xtera’s presentation to show the benefits of its advanced and novel approach to the subsea product…

In a first of its kind experiment in China, a consortium of researchers from CICT (China Information and Communication Technology), FiberHome and Accelink have successfully developed a system capable to transmit at petabit rates. The National Information Optoelectronics Innovation Center and the National Key Laboratory of Optical Fiber Communication Technology and Network China working as the subsidiary of CICT Group…

Can a Single-wavelength do transmission at a speed of 600Gbps? We have been talking about commecial deployment of optical networks that are designed to transmit at a speed of 100Gbps. The developments are quick in the field of fiber optics. Now CITIC Networks in partnership with Huawei made a successful commercial implementation of Single-Wavelength 600G network in Beijing. The practical…

What Is PAM4? PAM4 (4-Level Pulse Amplitude Modulation) is one of PAM modulation technologies that uses 4 different signal levels for signal transmission. Each symbol period can represent 2 bits of logic information (0, 1, 2, 3), that is, four levels per unit time. In the data center and short-distance optical fiber transmission, the modulation scheme of NRZ is still…