Dispersion management for long-haul high-speed optical networks
CA 2340848 A1 · Owner: Nortel Networks Limited · Inventors: Mcnicol, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The dispersion managed solution for long haul high speed D/WDM, systems according to the invention operates on three closely related aspects of the communication system. One is provision of a new type of dispersion managed (DM) optical cable with improved dispersion performance over the existing unidirectional and bidirectional cables. Another aspect considered is providing a communication path implemented over DM cable with distributed Raman amplification to, obtain a transmission reach of 2000km and more without regeneration. Still another aspect of the dispersion management solution according to the invention is to provide ways of managing the end-to-end dispersion of a communication …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 15, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.