Optical communication system
CA 2272763 A1 · Owner: Jds Fitel Inc. · Inventors: Tremblay, Yves; King, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system is provided which enables an n channel system to be upgraded into, at least an (n-1)+p channel system wherein p>1 and wherein the n-1 channels , are, substantially wider channels than the p channels n uncooled inexpensive lasers not, requiring optical isolators provide optical signals to the n broad channels and p, temperature compensated cooled lasers having optical isolators provide optical signals to, the p channels. Advantageously the system can be installed at a reasonable cost to the, first n users and be upgraded in number of channels and cost as the need for the system to, evolve and grow arises. This obviates the problems associated with justifying the …
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 May 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 2021.
- 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.