Wavelength filter integrated into an optical waveguide
CA 1284282 C · Owner: Lacroix, Suzanne · Inventors: Gonthier, Francois; Lacroix, Suzanne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a wavelength filter integrated into an optical waveguide and to a method for manufacturing same. The optical waveguide is constituted of a fiber of light transmitting material on which is formed a plurality of biconical tapered portions which constitute the wavelength filter. The characteristics of the filter are governed by the number of biconical tapers and their respective profiles. The tapers are preferably formed by heating locally and stretching a conventional monomode optical fiber or by adding tapers in a monomode optical fiber such as by splicing.
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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 May 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 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.