Otdr arrangement for detecting faults in an optical transmission system on a span by span basis
CA 2496237 A1 · Owner: Red Sky Subsea Ltd. · Inventors: Neubelt, Michael J.; Evangelides, Stephen G. Jr.; Morreale, Jay P.
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 using optical time-domain reflectometry (OTDR) with a bi-directional optical transmission system that includes a plurality of terminals (200,202) interconnected by first (206) a second (208) unidirectional optical transmission paths having at least one repeater (222) therein. The method begins by transmitting a probe signal from a first terminal through the repeater over the first optical transmission path. A returned OTDR signal is received over the first optical transmission path in which status information concerning the first optical transmission path is embodied. The returned OTDR signal is transformed to a digitized electrical signal and the digitized …
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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 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.