Wednesday, October 26, 2016
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Microsoft Brings 3D Creativity To Winsdows 10, Launches Surface Studio, Surface Book i7 And Affordable VR Headset
Alphabet Cutting Jobs in Google Fiber, Pauses Expansion Plans
Nintendo Cuts Profit Forecast
Sony To Establish New Imaging Products And Solutions Company
Samsung Pay Expand In New Russia, Thailand and Malaysia
Samsung Introduces New ARTIK Smart IoT Platform Modules
iPhone Sales Declined, But Services Revenue Grew In Last Fiscal Quarter
Google's Jamboard Reinverts The Whiteboard For Collaboration in the Cloud
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > General Computing > NEC Dem...
Last 7 Days News : SU MO TU WE TH FR SA All News

Wednesday, January 11, 2012
NEC Demonstrates Terabit/s Superchannel Transmission over 10,000km

NEC has announced the successful experimental demonstration of 1.15-Tb/s ultra-long haul optical transmission over 10,000 kilometers using optical superchannel technology.

This is the first instance that a terabit/s channel generated from a single laser source has been transmitted over such a distance. Four superchannels were transmitted together by wavelength division multiplexing (WDM) to achieve a total capacity of 4 Tb/s and a spectral efficiency of 3.6 b/s/Hz. The results demonstrate that practical high-capacity transmission for transoceanic communication can be achieved using the superchannel technology.

Optical superchannels allow phase-locked carriers with independent modulation to overlap in frequency following the principles of orthogonal frequency division multiplexing (OFDM). This enables efficient bandwidth utilization, allowing higher spectral efficiency and higher data rate per laser through parallelization. NEC's system uses hardware and advanced techniques, including optical multi-tone generation, large-core/ultra low-loss fiber, intradyne digital coherent detection, and digital equalization at higher oversampling, along with well-established technologies such as EDFAs and DP-QPSK modulation. NEC said that its experiment yielded a 2-dB system margin above the hard decision FEC threshold without using processing-intensive MAP or MLSE algorithms.

"This success is another example of NEC's continuing leadership in high capacity, long distance optical communication technologies, following its record achievements of 101.7 Tb/s per fiber for single core fiber transmission, the first terabit field trial with coexisting 100G, 450G and 1T signals on the same fiber, and the highest order QAM optical transmission of 1024QAM" confirmed Dr. Yasuhiro Aoki, General Manager for NEC's Submarine Network business.

Apple Confirms Anobit Acquisition        All News        Kingston Offers Memory Solutions for Ultrabooks, New Wi-drive And USB Flash Drives at CES
Apple Confirms Anobit Acquisition     General Computing News      Mozilla To Deliver Firefox Extended Support Release

Get RSS feed Easy Print E-Mail this Message

Related News
Minecraft: Education Edition will launch November 1
NEC Uses Artificial Intelligence to Automatically Detect Unknown Cyber-attacks
Hyundai Motor and Cisco To Cooperate On Connected Cars
Samsung Adds Intelligence And Connectivity To Your Car With Samsung Connect Auto
Open Connectivity Foundation Established To Promote Interoperability Of IoT Devices
Optical Drive Makers Face EU Antitrust Fines
Kinect for Windows Sales To Phase Out
NEC Develops Ultra-sensitive Terahertz Camera
NEC Technology Detects Counterfeit Products
Microsoft Releases New Kinect SDK And Adapter Kit
NEC Technology Helps Take Less Stressful Blood Pressure Measurements
Samsung, Intel, Dell, Boradcom Team Up On Standards For Internet of Things

Most Popular News
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2016 - All rights reserved -
Privacy policy - Contact Us .