Fiber optic grating temperature compensation device and method
CA 2293080 A1 · Owner: Bragg Photonics,Inc. · Inventors: Jin, Wenlin; Kung, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for compensating for changes of a center wavelength of a fiber optic grating due to temperature variations comprising a holder including a first and second connector for securing a fiber optic grating, the first connector is fixed the second, connector is movable to increase or decrease a strain in the grating, a source of force applied to the second connector and, the source of force varies with changes in temperature such that, with and increase in temperature the second connector moves toward the first connector to decrease the strain in the fiber optic grating; and, a method for compensating for changes of a center wavelength of a fiber optic grating due to temperature …
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 December 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2021.
- 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.