Single mode operation of microelectromechanically tunable, half-symmetric, vertical cavity surface emitting lasers
CA 2380742 A1 · Owner: Wang, Peidong · Inventors: Vakhshoori, Daryoosh; Wang, Peidong; Tayebati, Parviz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for fabricating a microelectromechanically tunable vertical-cavity surface-emitting laser (4) with precise lateral and vertical dimensional control. MEM-tunable VCSEL structures are provided which include a gain medium (6) located in a mechanically tunable high-Q Fabry-Perot cavity (8) formed by an upper (12) and lower (10) reflective dielectric film stack. Tuning is achieved by translational movement of the upper cavity-tuning reflective dielectric film stack (12) in a controlled electrostatic field. The current invention deals with the intracavity electrical contacts for current injection for this type of the MEMtunable VCSEL. The current invention also includes …
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 July 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 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.