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.”
High-temperature superconductivity discovery paves way for energy superhighways
July 29, 2014
Physicists at University of Illinois at Chicago (UIC) working with Cornell University and Brookhaven National Laboratory ...
Study pinpoints how to make Li-ion batteries last longer
Audi, BMW, Daimler drive open source measurement data management
A roadmap for cool and lossless lasers, with Bismuth
ST opens MEMS microphone test laboratory
Update yourself on anti-counterfeiting measures at Mouser
July 28, 2014
Global distributor of semiconductors and electronic components Mouser Electronics has unveiled a new Anti-Counterfeiting ...
60 GHz startup targets mobile
Dual 13A or single 26A μModule regulator integrates digital power system management
What's that smell? An app for that soon, says Sensirion
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
- Exploring the Business Model Evolution of High-Tech Equipment Manufacturers
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
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, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...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.