A fault isolation technique for all optical networks
CA 2399775 A1 · Owner: Saunders, Ross · Inventors: Saunders, Ross
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for isolating faults in an optical network having a plurality of partial regenerators. The method includes: transmitting an optical, signal through the optical network; determining an error rate for the optical signal, at an egress point of the optical network; sequentially introducing a dither control, signal into the optical signal at each of the plurality of partial regenerators; and, monitoring the error rate for the optical signal at the egress point of the optical, network; thereby isolating where a fault occurs in the optical network.
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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 August 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2024.
- 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.