Double-core light-conducting fiber, process for producing...

Details Double-core light-conducting fiber, process for producing... Double-core light-conducting fiber, process for producing...

H - Electricity

01

S

H01S 3/06 (2006.01) C03B 37/012 (2006.01) H01S 3/04 (2006.01) H01S 3/067 (2006.01) H01S 3/094 (2006.01)

Patent

CA 2204865

The invention is directed to a double-core light-conducting fiber comprising a pump core (22), a laser core (24) which is arranged centrically in the pump core (22), and a cladding (26) surrounding the pump core (22). It is characterized in that the pump core (22) which is constructed with a substantially circular cross section has at least-one ground portion (28) on the outside which extends in the light direction of the double-core light-conducting fiber (20) and amounts to 1% to 49% of the diameter of the pump core (22). The invention is further directed to a process for the production of the double-core light-conducting fiber and to a double-core fiber laser and to a double- core fiber amplifier which use the double-core light-conducting fiber according to the invention. The substantially round pump core (22) with its centrically arranged laser core (24) enables a simple connection with other fiber-optic components and a simple coupling in of the pumping light.

L'invention concerne une fibre optique à double noyau constituée d'un noyau de pompage (22), d'un noyau laser (24) placé au centre du noyau de pompage (22) et d'un gainage (26) enveloppant le noyau pompage (22). La fibre optique se caractérise en ce que le noyau de pompage (22) de section sensiblement circulaire présente à l'extérieur une partie rectifiée (28) s'étendant dans le sens de la lumière de la fibre optique à double noyau (20), cette partie rectifiée correspondant à une valeur comprise entre 1 % et 49 % du diamètre du noyau de pompage (22). L'invention concerne également un procédé de fabrication de la fibre optique à double noyau, une fibre laser à double noyau et un amplificateur de fibre à double noyau qui comprend la fibre optique à double noyau de l'invention. Grâce au noyau de pompage (22) sensiblement circulaire doté d'un noyau laser (24) central, on obtient un raccordement simple à d'autres composants à fibre optique ainsi qu'une injection aisée de la lumière de pompage.

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