Flash optical performance monitor
CA 2413218 C · Owner: Morawski, Roman Z. · Inventors: Wisniewski, Michal P.; Miekina, Andrzej; Barwicz, Andrzej
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flash optical performance monitor for monitoring DWDM channels is disclosed. The monitor is to assess the spectral quality of light received and to determine from changes in the spectral quality relative to a known spectral quality indicative of an acceptable signal an estimate of signal quality. The flash optical performance monitor comprises a spectrometric transducer for performing a spectral decomposition of the light received and for transforming the decomposed optical signal into electrical-domain data a memory for storing advanced digital signal processing routines and a processor in connection with the wavelength optical unit and with the memory. The processor receives the …
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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 November 29, 2002 and granted January 27, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2024.
- 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.