A tunable micro-ring filter for optical wdm/dwdm communication
CA 2510573 A1 · Owner: Shih, Min-Yi · Inventors: Shih, Min-Yi; Dasgupta, Samhita; Nielsen, Matthew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A technique for implementing a tunable micro-ring filter is disclosed. According to an embodiment of the present invention a tunable filter for , optical communication systems comprises a first waveguide (110) forming a pattern with a second waveguide (112); a resonator (114) coupled to the first waveguide (110) and the second waveguide (112) wherein the resonator (114) comprises a nonlinear optical material; an electrode structure (214 216) , sandwiching the first waveguide (110) the second waveguide (112) and the , resonator (114); the electrode structure (214 216) adapted for receiving a , tuning signal and tuning an effective index of the resonator in response to the tuning signal; …
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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 November 24, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2025.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.