Tunable wavelength converter
CA 2245244 C · Owner: Glance, Bernard · Inventors: Glance, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tunable wavelength converter generates a selectable wavelength for an optical signal. The tunable wavelength converter includes an input active section, an output active section, an interferometer and an optical wavelength selector. The above components are integrated on a substrate between two mirrors. An optical input signal at a first wavelength is input through the input active section which in conjunction with the output section and the interferometer controls the amplitude of an optical signal at a second wavelength propagating in the laser cavity. The information contained in the amplitude of the input signal is transferred to the optical signal in the interferomic laser cavity and …
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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 18, 1998 and granted December 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2020.
- 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.