Wavelength cross-connect
CA 2394936 C · Owner: Ducellier, Thomas · Inventors: Ducellier, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical cross-connect having an input port for launching a beam of light into the optical cross-connect at least two output ports, each output port for selectively receiving a beam of light a dispersive element for dispersing the beam of light into separate wavelength channels and a switch core for independently switching at least one individual wavelength channel between ports. The switch core includes a cylindrical ATO element two cylindrical relay lenses, and two opposing deflector arrays. Conveniently the deflector arrays are either liquid crystal phase arrays or reflective MEMS arrays.
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 July 24, 2002 and granted December 13, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 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.