Wavelength-modular optical cross-connect switch
CA 2358386 A1 · Owner: Casaccia, Emilio · Inventors: Casaccia, Emilio; Frascolla, Massimo; Bentivoglio Ravasio, Filippo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical cross connect (OXC) switching fabric that has wavelength and fiber modularity, allowing the OXC fabric to be expanded for new wavelengths and new input fibers with the addition of new modules is discloed. A plurality of main module switches comprising two-channel add/drop modules are connected to a common junction module switch. For M wavelengths on N fibers switched within the OXC, each of N/2 main modules includes M separate building blocks each comprising two one-channel add/drop module and the junction module includes , MxN/2 selection matrices for N/2 main module and MxN passive optical splitters having one input and (N/2-1) output. The main module building blocks and …
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 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 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.