Interlayer directional coupling in antiresonant reflecting optical waveguides
CA 1299410 C · Owner: Koch, Thomas Lawson · Inventors: Koch, Thomas Lawson
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grating in the upper reflecting layer of an antiresonant reflecting optical waveguide is used to extract energy of a selected wavelength from the waveguiding layer into the reflecting layer. In one embodiment the reflecting layer is designed as a gain medium which is pumped in the region of a grating and optically terminated at each end of the device such that the embodiment serves as a laser having a long cavity provided by the waveguiding layer with the gain provided in the short grating region. In a second embodiment the reflecting layer in the region of a grating has an opposite conductivity dopant from that of the waveguiding layer such that the device in this region may be …
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 2009.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.