Convex polygon-shaped all-glass multi-clad optical fiber and method of fabrication thereof
CA 2354783 A1 · Owner: Croteau, Andre · Inventors: Pineau, Eric; Croteau, Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An all-glass multi-clad polygon-shaped convex optical fiber comprises a core having a core refractive index, a first glass cladding disposed around the core and having a first cladding refractive index that is lower than the core refractive index of the core and at, least a second glass cladding disposed around the first glass cladding and having a second cladding refractive index that is lower than the first cladding refractive index. The first and second claddings each have a convex polygonal cross-section, e.g. octagonal cross-sections. A method for fabricating such an optical fiber comprises the steps of: (i) mechanically machining an all-glass optical fiber preform having a core and 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 August 7, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2023.
- 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
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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.