Dutch researchers create record-breaking 3300km optical link to Geneva
July 10, 2012 // Nick Flaherty
SURFnet, the National Research and Education Network (NREN) in the Netherlands, has demonstrated a record-breaking 3300km optical fibre link between Amsterdam and Geneva.
The 100Gbps coherent field trial between the National Supercomputing Center (SARA) in Amsterdam and CERN (Conseil Européen pour la Recherche Nucléaire - European Organization for Nuclear Research) in Geneva used single carrier technology and soft decision forward error correction (SD-FEC) on only erbium doped fiber amplifiers (EDFAs).
To further demonstrate the subsystem’s performance, the embedded fiber link comprised a combination of the relatively high-nonlinear TW+ and TWRS fibers. Furthermore, the circuit was optically looped back in Geneva, creating a 3,300km circuit. The looped-back 3,300km link operated error-free for more than 23 hours (BER<10-15) over the entire C-band and over a range of launch powers, highlighting the true upgrade potential of this link to 8Tbps in the future using 100Gbps coherent transponders.
“This trial is another clear demonstration that coherent 100Gbps PM-QPSK transmission technology is tolerant to a very large range of impairments (i.e. chromatic dispersion, polarization mode dispersion, noise) and allows the use of alien wavelengths in research networks over DWDM systems from multiple vendors,” said Roeland Nuijts, Optical Network Architect for SURFnet. “Transmission distance and tolerance against different impairments will be critical going forward as we look to build out international networks across geographic and administrative borders in order to realize a global facility for research networking.”
The subsystem from Opnext consists of a suite of OTS-100FLX 100Gbps flexponder line cards and a newly released OTS-mini ETSI shelf with a 4RU small form factor. “It is great to see the results of our 100Gbps coherent product development deliver both the capacity and reach needed to scale next-generation optical networks around the world,” said Mike Chan, President of Opnext’s subsystems business unit. “SURFnet’s 3,300km field trial really pushed us, and our 100Gbps coherent technology met the challenge.”
The EFM32 Zero Gecko starter kit in stock at RS Components
March 11, 2014
RS Components has announced availability of Silicon Labs' EFM32 Zero Gecko Starter Kit, an excellent tool for engineers to ...
Freescale mourns employees on missing Malaysian flight
Arrow Electronics signs EMEA distribution for Variscite
Apple design wins lift Bosch to top of MEMS ranking
Smartphone app oximeter meets hospital standards
Haptic lens converts light into touch
March 10, 2014
A lot of research goes into bringing back some level of sight to visually impaired people. Often, researchers look into ways ...
The MEMS market - who are the winners, the losers
Optical sensor improves spot welding process
SmartMesh IP wireless sensor network starter kit
- DSM presents: Select the best plastic for DDR4
- Wireless Sensor Network Challenges and Solutions
- Putting FPGAs to Work in Software Radio Systems Handbook
- Real-Time Spectrum Analysis for Troubleshooting 802.11n/ac WLAN Devices
InterviewWi-Fi is ‘open’ for business, which is good news for mobile subscribers
Following the news that Netgear has built a Facebook-linked amenity Wi-Fi option into its routers, enabling businesses to offer free Wi-Fi in return for liking the company Facebook page, David Nowicki, ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Freescale is giving away ten RIoTboards, worth 74 dollars each, for EETimes Europe's readers to win.
Designed to run Android operating systems efficiently or to run under Linux, the board is based on the Freescale i.MX 6Solo processor; using the ARM Cortex-A9 architecture.
And the winner is...
In our previous reader offer, Crystal Display was giving...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.