Optical mode coupling devices and an optical switch matrix based thereon
CA 2429068 A1 · Owner: Moiseyev, Nimrod · Inventors: Vorobeichik, Ilya; Orenstein, Meir; Narevicius, Edvardas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is a waveguide structure (10) that includes two waveguides (90 94) flanking a coupling region (92) whose effective refractive index is less than those of the waveguides. Outboard of the waveguides are bounding regions (88, 96) whose effective refractive indices decrease inwards adiabatically at the proximal and distal ends of the bounding regions. The waveguides are coupled optically by periodic perturbations of the waveguide geometry or by , reversible uniform or periodic perturbations of the effective refractive indices. In an optical switch matrix based on the waveguide structure all the , waveguides are straight and parallel. A second aspect of the invention is a …
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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 November 14, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2023.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.