Optical regeneration for optical fibre transmission systems with soliton signals
CA 2255595 A1 · Owner: Alcatel · Inventors: Bigo, Sebastien; Desurvire, Emmanuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a regenerator for transmission systems with solitons pulses comprising a cavity laser, for instance a ring fibre laser wherein is inserted a modulator (5), means for coupling the input signal to be regenerated in the modulator input (7) to ensure laser mode-locking, and means for coupling the regenerated signal in the modulator output (9). The soliton signal to be regenerated ensures the cavity laser locking-mode; moreover the signal circulating in the cavity ensures a soliton signal modulation which is thereby regenerated. Phase or intensity modulations or both, can be used. The invention is characterised in that a ring cavity laser fibre or a Fabry Perot cavity …
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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 March 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2020.
- 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.