Optical demultiplexing system
CA 2096771 C · Owner: Agilent Technologies, Inc. · Inventors: Puleo, Mario; Cavaciuti, Alessandro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical demultiplexing system enables a wanted channel to be extracted as an optical signal from an optical carrier modulated by a TDM data flow. The system makes use of a semiconductor optical amplifier whose gain, is modulated by saturation effect. The amplifier receives both the modulated optical carrier and one or more sampling optical carriers, with wavelengths different from that of the modulated carrier. One or more optical filters extract from the amplifier output the sampling carrier or carriers modulated by the wanted data signal or signals.
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 May 21, 1993 and granted July 14, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 21, 2015.
- 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.