Indium-clad fiber-optic polarizer
CA 1293397 C · Owner: Dyott, Richard B. · Inventors: Dyott, Richard B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fiber-optic polarizer comprising the combination of an optical fiber having a polarization-holding core and clad?ing with different refractive indices and forming a single-mode guiding region, the guiding region being offset from the center of gravity of the fiber section and located sufficiently close to the surface of one side of the fiber along a selected length of the fiber, to expose the evanescent field of the guiding region at the surface of the one side to allow coupling to a contiguous medium the outer, surface of the fiber having a non-circular cross-section with a predetermined geometric relationship to the guiding region and a pair of orthogonal polarization axes therein so …
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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
- Granted December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
- 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.