Product category:
Optical Filters, Lenses, Gratings etc
News Release from: Oki Electric | Subject: OCDM
Edited by the Electronicstalk Editorial
Team on 11 September 2002
All-optical multiplexing boosts
datarates
Oki Electric claims to have developed a new optical-fibre access technology based on OCDM (optical code division multiplexing).
Oki Electric claims to have developed a new optical-fibre access technology based on OCDM (optical code division multiplexing) This technology, developed by Oki in collaboration with Osaka University, allows service providers to guarantee transmission capacity of up to 10Gbit/s in bandwidth for bidirectional communications over an access network
This article was originally published on Electronicstalk on 27 Feb 2004 at 8.00am (UK)
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Service providers will also be able to offer flexible services for a variety of customer needs, such as offering multiple services on one network.
The company will report its detailed results today at the 2002 IEICE (Institute of Electronics, Information, and Communication Engineers) Society Conference.
"Oki believes that this technology will become indispensable in providing valuable new services that flexibly respond to customer requirements on bandwidth.
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Customers will be able to enjoy multiple services such as motion pictures, voices, and data simultaneously under the real broadband environment.
Our new method will expand the optical communications market", said Harushige Sugimoto, General Manager of the Corporate Research and Development Centre at Oki Electric.
With current broadband services, it is difficult to provide customers with both large data-transmission capacity and QoS (quality of service) at the same time, since these are best-effort type services involving shared bandwidths among a number of users.
With the new OCDM technology, the bandwidth of a wavelength in an optical fibre is further multiplexed and demultiplexed by optical codes.
This technology also allows for the allocation of services and users using these optical codes, which enables service providers to control a variety of bandwidths flexibly according to customer requests.
Oki has succeeded in proving that the new technology will allow service providers to guarantee bandwidth up to 10Gbit/s, one hundred to one thousand times of the capacity of current services.
The optical encoder/decoder Oki has developed uses a passive optical element, the FBG (fibre Bragg grating) filter.
Oki has succeeded in enhancing the data bitrate of an FBG-type encoder/decoder, and this makes it possible to encode signals at various speeds (from 1 to 10Gbit/s) with one encoder/decoder.
As the equipment does not require an electrical power supply, a much smaller optical transmission system becomes possible at lower cost.
Using this newly developed technology, Oki intends to develop commercial optical encoder/decoder products and an optical encoder/decoder and optical code transceiver/receiver within a year.
(This was Electronicstalk's Top Story on 10 September 2002).
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