Optimising power in optical communications networks
CA 2486640 C · Owner: Marconi Communications Limited · Inventors: Claringburn, Harry Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The relative launch power of signals at an add/drop node transponder is controlled to maximise available power. Known values of signal bandwidth and likely noise in the signal path (8), for example derived from the system , manager (24,9) are used to control (22) the launch power (23) into the optical amplifier (11), in order to optimise the launch power accordingly.
Read the whole patent
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 June 11, 2003 and granted October 1, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2025.
- 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.