Double-core, active fiber optical amplifier having a wide...

Details Double-core, active fiber optical amplifier having a wide... Double-core, active fiber optical amplifier having a wide...

H - Electricity

01

S

345/12

H01S 3/02 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) H01S 3/067 (2006.01)

Patent

CA 2035804

An optical amplifier for telecommunication lines over which communication signals at a predetermined wavelength are transmitted. The amplifier has portions of two optically coupled fibers, at least one of the fibers being an active fiber, interconnected by a length of active fiber connected to the one fiber of successive portions. Preferably, the active fibers are doped with erbium, and the coupling wavelength of the two fibers is different from the communication signal wavelength so that energy of the spontaneous emission of erbium is transferred from the one fiber to the other fiber and absorbed in the latter permitting amplification of communication signals in a range of wavelengths corresponding to the tolerance range of commercial laser signal emitters.

L'invention est un amplificateur optique pour lignes de télécommunication servant à la transmission de signaux d'une longueur d'onde prédéterminée. Cet amplificateur comprend des segments faits de deux fibres couplées optiquement dont l'une au moins est une fibre active, qui sont interconnectés par des segments de fibre active. Dans la concrétisation privilégiée de l'invention, les fibre actives sont dopées à l'erbium et les longueurs d'onde de couplage des deux fibres est différente de la longueur d'onde du signal de communication de sorte que l'énergie d'émission spontanée de l'erbium est transférée d'une fibre à l'autre et est absorbée par cette dernière, ce qui permet d'amplifier les signaux de communication dans une gamme de longueurs d'onde qui correspond à la gamme de tolérance des émetteurs de signaux à laser commerciaux.

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