Polarization dependent filtering device utilizing a fabry-perot cavity
CA 2367167 A1 · Owner: Jds Uniphase Inc. · Inventors: Xie, Jimin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A circuit is disclosed wherein two beams exiting opposite ends of an optical resonant cavity, such as a Fabry-Perot (F-P) etalon for example are provided via unguided , light directing means to a combining region where the beams can interfere with one another to provide a desired output, response. In one embodiment multiplexed channels of light can be , demultiplexed by the device described heretofore, or alternatively the phase relationship between these , two beams can be altered prior to their being combined to provide for example, a linearized , output response useful in applications such as wavelength locking. By varying the reflectivity of the optical cavity, reflectors and/or by …
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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
- Filed January 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2024.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.