Rare earth polymer optical amplifier or fiber
CA 2400283 A1 · Owner: Panackal, Anna · Inventors: Gao, Renyuan; Panackal, Anna; Garito, Anthony F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are cost-effective, compact, optically pumped high gain, rare earth , polymer materials such as erbium (Er3+) perfluoro polymers, optical fibers made from the materials and waveguide amplifiers made from the materials having low-loss at telecommunications wavelengths for operation in communications network systems. The polymer amplifier is based on the use of novel high performance rare earth (RE) polymer materials. The new discovered highly transparent RE polymer materials are directly synthesized at high RE ion concentrations (.sim.1020-1021 rare earth ion/cm3.sim.10 wt.%) with each metal ion encapsulated and physically buffered by insulating covalently , bonded, …
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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 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2022.
- 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.