Ytterbium-doped optical fiber

Details Ytterbium-doped optical fiber Ytterbium-doped optical fiber

H - Electricity

01

S

H01S 3/06 (2006.01)

Patent

CA 2742138

An ytterbium-doped optical fiber including a core containing at least ytterbium, aluminum and phosphorous and a clad surrounding the core, wherein a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core is equal to a molar concentration of aluminum oxide with respect to aluminum in the core, wherein a ratio of a molar concentration of diphosphorus pentoxide with respect to phosphorus in the core to the molar concentration of ytterbium oxide with respect to ytterbium in the core is higher than or equal to 10 and lower than or equal to 30, and wherein a relative refractive index difference between the core and the clad is higher than or equal to 0.05% and lower than or equal to 0.30%.

L'invention concerne une fibre optique dopée à l'ytterbium comprenant un noyau contenant au moins de l'ytterbium, de l'aluminium et du phosphore, et un placage entourant le noyau. La concentration molaire en phosphore contenue dans le noyau en termes de pentoxyde de diphosphore est égale à la concentration molaire en aluminium contenue dans le noyau en termes d'oxyde d'aluminium, et le rapport de la concentration molaire en phosphore contenue dans le noyau en termes de pentoxyde de diphosphore par rapport à la concentration molaire d'ytterbium contenue dans le noyau en termes d'oxyde d'ytterbium n'est pas inférieur à 10 mais pas supérieure à 30. La différence d'indice de réfraction relatif entre le noyau et le placage n'est pas inférieure à 0,05 % mais pas supérieure à 0,30 %.

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