LONDON – Chinese telecommunications equipment company ZTE Corp. claims to have broken the world record for a single-channel data transmission with a rate of 10 terabits per second over 640-kilometers of optical fiber. This is the equivalent of sending 160 high definition movies every second.
The results of the test transmission were presented at the recent OFC/NFOEC 2011 conference in Los Angeles.
The experiment used ZTE’s patented “carrier generation technology” to generate 112 coherent and frequency-locked optical sub-carrier signals; with each sub-carrier bearing 100-Gbps optical signals, and successfully achieved optical signals with a single-channel rate of 11.2-Tbps, a payload line rate of 10-Tbps rate plus overheads such as forward error correction (FEC).
Optical communications companies are beginning to use 100-Gbps transmission but also seeking candidate technologies at higher bit rates of 400Gbps, 1Tbps, and beyond. With rapid growth in demand for higher bandwidth, single channel 10Tbps will be the transmission rate for future telecommunication networks.
David Patterson, known for his pioneering research that led to RAID, clusters and more, is part of a team at UC Berkeley that recently made its RISC-V processor architecture an open source hardware offering. We talk with Patterson and one of his colleagues behind the effort about the opportunities they see, what new kinds of designs they hope to enable and what it means for today’s commercial processor giants such as Intel, ARM and Imagination Technologies.