Optical waveguide junction
CA 1290436 C · Owner: Kapon, Elyahou · Inventors: Kapon, Elyahou
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical waveguide junction including a multimode input waveguide and a plurality of n spaced apart output waveguides disposed on a substrate. Each of the output waveguides has a different propagation constant (e.g. by having, different widths or indices of refraction) so that the input modes of optical radiation are sorted in a predetermined way into n groups of output modes corresponding to the n output waveguides. If the input waveguide is excited with optical radiation of different wavelengths, the output waveguides may be tailored with specific widths and indices of refraction to sort the input radiation into the n output waveguides as a function of wavelength, thereby demultiplexing …
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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.