Product category:
Optical Transceivers, Transponders and Repeaters
News Release from: Oki Electric
Edited by the Electronicstalk Editorial
Team on 16 March 2006
Distance breakthrough for speedy
transceiver
Oki Electric reports success in transmitting 160Gbit/s data over a distance of 635km.
Oki Electric reports success in transmitting 160Gbit/s data over a distance of 635km This experiment was conducted as part of the "Research and development on ultra-high-speed backbone photonic network technologies" project, consigned by National Institute of Information and Communications Technology (NICT)
This article was originally published on Electronicstalk on 10 Apr 2002 at 8.00am (UK)
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To prove the results for this project, Oki used an optical testbed provided by Japan Gigabit Network II (JGN II), and succeeded in transmitting world's first 160Gbit/s data that included high-vision video.
This field trial was the longest distance attempted to date on the JGN II optical testbed.
The experiment using JGN II testbed took place in December 2005 in co-operation with the Research Promotion Council of Keihanna Info-Communication Open Laboratory and was hosted by NICT.
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The optical testbed offered by JGN II is an optical fibre (single mode optical fibre 63.5km x 10 fibre cables) installed between Open Laboratory in Kyoto and Dojima Relay Station in Osaka.
At each connection point an optical amplifier similar to a relay station for commercial-use 10Gbit/s data transmissions, and a dispersion compensation fibre were installed.
It is also structured to increase the transmission distance by changing the number of turn back times.
At this field trial, Oki used a 254km transmission route with two turn backs to achieve the world's first transmission of signal evaluation data simultaneous with high-vision video.
The distance was increased by changing the number of turn backs, and as a result, succeeded in a total of 635 km with five turn backs, the longest yet achieved with the JGN II testbed.
Oki's optical 160Gbit/s transceiver was exhibited at the International Optoelectronics Exhibition 04 in an experimental 120km transmission over optical fibre, which received great reviews as a stable and practical apparatus.
Oki has also succeeded in a 640km transmission using an 80km recirculating loop.
To gain results for a more practical use for 635km transmission, Oki evaluated the transmission paths on actual environment with changing temperatures, and also confirmed error free data transmission.
"The 160Gbit/s optical transceiver creates optical data signals using time division multiplexing with individual modulation".
"Oki has been committed to this individual modulation and has developed the optical time division multiplexing module".
"The module used in this experiment reduces optical coupling loss by half, is one third the previous size, and offers increased usability", said Harushige Sugimoto, Senior Vice President and Chief Technology Officer at Oki Electric.
"The success of the 635km field trial proves it can be used for backbone lines such as the super high-speed optical communication between Tokyo and Osaka (500km), which is 16 times higher in speed than the 10Gbit/s systems that are commercialised".
"160Gbit/s optical transmission is the next generation super high-speed optical transmission technology to be commercialised after 2010".
"We will continue to analyse the results we have obtained and will develop a 160Gbit/s optical transceiver for real data transmission".
High-vision video transmission was conducted by connecting to a photonic network offered by The University of Electro-Communications.
Anritsu Corporation co-operated in the extraction of data from the experiment.
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