Optical regeneration for optical fibre transmission systems...

G - Physics – 02 – F

Patent

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Details

G02F 1/35 (2006.01) H04B 10/18 (2006.01) H04L 7/027 (2006.01) H01S 3/098 (2006.01)

Patent

CA 2255595

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 laser is used. The dispersion fibre non-linear loop mirror can be used as modulator, or an amplifier with semiconductor.

L'invention concerne un régénérateur pour système de transmissions à implusions solitons, comprenant un laser à cavité, par exemple un laser à fibre en anneau, dans lequel est inséré un modulateur (5), des moyens pour coupler le signal d'entrée à régénérer en entrée (7) du modulateur, pour assurer un blocage de mode du laser, et des moyens pour coupler en sortie (9) du modulateur le signal régénéré. Le signal soliton à régénérer assure un blocage de mode du laser à cavité; par ailleur, le signal circulant dans la cavité assure la modulation du signal soliton, qui est aini régénéré. On peut utiliser des modulations de phase ou d'intensité, ou les deux. L'invention propose d'utiliser comme laser à cavité un laser à fibre en anneau, ou un laser à cavité Fabry Perot. On peut utiliser comme modulateur un miroir non linéaire en boucle, de la fibre dispersive, ou un amplificateur à semi- conducteur.

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