Optical transmission link for wavelength division multiplex transmission, and optical fiber constituting the link
CA 2246473 A1 · Owner: The Furukawa Electric Co. Ltd. · Inventors: Mukasa, Kazunori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is to provide an optical transmission link suitable for a high speed and high bit rate wavelength division multiplex transmission. An optical transmission link 1 is composed of a non-linearity diminishing optical fiber F1, a dispersion adjusted transmission optical fiber F2, and an optical fiber F3 for diminishing and adjusting a dispersion slope. The mode field diameter of the non-linearity diminishing optical fiber F1 is made into 12m or more. The dispersion slope is made small to be nearly zero with the mode field diameter of the dispersion adjusted transmission optical fiber F2 set to 10m or more and the, dispersion produced at the non-linearity diminishing optical fiber …
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 September 3, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 3, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2020.
- 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.