Tunable dispersion compensator
CA 2324709 A1 · Owner: Fu, Xiaoli · Inventors: Fu, Xiaoli; Colbourne, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and device is disclosed for dispersion compensation of an optical signal. By, providing two filters having a sloped dispersion and opposite in sign over a wavelength, band wherein one filter is tunable a controllable amount of dispersion can be introduced, to offset or compensate dispersion. Preferably one of the filters is a tunable periodic, device in the form of a multi-cavity GT etalon. In a preferred embodiment of the filters, can be designed to provide various controllable but different constant amounts of, dispersion.
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
- Filed October 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2022.
- 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.