Optical switch with power equalization
CA 2344788 A1 · Owner: Gruber, John G. · Inventors: Bryant, Andrew John; Graves, Alan F.; Gruber, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical intensity control system for use with an optical switch providing individual signal paths between input and output ports. The system has a optical splatters connectable to output multiplexers of the switch and also has variable optical intensity controllers (VOICs) for insertion into the individual signal paths. The VOICs individually control the intensity of optical signals present in the signal paths in accordance with intensity control signals. An equalizer is connected to the splatters and to the VOICs for producing an, estimate of the optical power of each individual switched optical signal and generating the intensity control signals. The equalizer is adapted to …
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 April 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2023.
- 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.