Wavelength selective optical coupler
CA 1108902 A · Owner: Her Majesty The Queen, In Right Of Canada, As Represented By The Ministe R Of Industry · Inventors: Macdonald, R. Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical coupler for a fiber optic communication system, which couples one band of wavelengths out of the fiber while allowing others to be carried further. This allows wavelength division multiplexing of signals within a single fiber. The preferred embodiment of the invention is comprised of a waveguide having one of its walls corrugated and a Fabry-Perot type resonator enclosing the waveguide around the corrugation with its axis transverse thereto.
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
- Granted September 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 1998.
- 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.