Dual core photonic crystal fibers (pcf) with special dispersion properties
CA 2443037 A1 · Owner: Crystal Fibre A/S · Inventors: Mortensen, Niels Asger; Bjarklev, Anders; Broeng, Jes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical fibre for transmitting light said optical fibre having an axial , direction and a cross section perpendicular to said axial direction said , optical fibre comprising: (1) a first core region comprising a first core material having a refractive index Nco,1; (2) a microstructured first cladding region surrounding the first core region said first cladding region , comprising a first cladding material and a plurality of spaced apart first cladding features or elements that are elongated in the fibre axial direction and disposed in the first cladding material said first cladding material , having a refractive index Ncl,l and each said first cladding feature or element having 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 April 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.