Composition for optical waveguide article and method for...

Details Composition for optical waveguide article and method for... Composition for optical waveguide article and method for...

C - Chemistry, Metallurgy

03

C

261/21, 88/97

C03C 13/04 (2006.01) C03B 37/012 (2006.01) C03B 37/023 (2006.01) C03B 37/026 (2006.01) C03B 37/027 (2006.01) G02B 6/02 (2006.01)

Patent

CA 2289768

An optical article having a rare earth doped, fluorinated aluminosilicate glass core composition consisting essentially, in mole %, of: SiO2 0-90; GeO2 0-90; Na2O 0-25; Li2O 0-10; K2O 0-25; Rb2O 0-25; Cs2O 0-25; Al2O3 5-40; Ga2O3 5-40; RE2(1)O3 0-40; RE2(2)O3 0-1; Er2O3 0.001-5; Yb2O3 0-5; PbO 0-15; RO 0- 20; ZnO 0-10; ZrO2 0-2; TiO2 0-2; Nb2O5 0-10; Ta2O5 0-10; P2O5 0-5; B2O3 0-15; As2O3 0-10; Sb2O3 0-20; Na2Cl2 0-10; Bi2O3 0-5, and up to 15 weight % fluorine in the form of at least one of a fluorinated component of the glass composition and a batch constituent selected from a group consisting of at least one of AlF3, REF3, NH5F2, NaF, Na2SiF6, Na3AlF6.

L'invention a trait à un article optique dont la composition du coeur en verre à l'alumino-silicate, fluoré et dopé aux terres rares, comporte, principalement, les éléments suivants et ce, en pourcentage molaire: SiO¿2? 0-90; GeO¿2? 0-90; Na¿2?O 0-25; Li¿2?O 0-10; K¿2?O 0-25; Rb¿2?O 0-25; Cs¿2?O 0-25; Al¿2?O¿3? 5-40; Ga¿2?O¿3? 5-40; RE¿2?(1)O¿3? 0-40; RE¿2?(2)O¿3? 0-1; Er¿2?O¿3? 0.001-5; Yb¿2?O¿3? 0-5; PbO 0-15; RO 0-20; ZnO 0-10; ZrO¿2? 0-2; TiO¿2? 0-2; Nb¿2?O¿5? 0-10; Ta¿2?O¿5? 0-10; P¿2?O¿5? 0-5; B¿2?O¿3? 0-15; As¿2?O¿3? 0-10; Sb¿2?O¿3? 0-20; Na¿2?Cl¿2? 0-10; Bi¿2?O¿3? 0-5, ainsi que jusqu'à 15 % de fluor, en pourcentage pondéral, ce fluor se présentant sous la forme d'au moins un composant fluoré de la composition du verre, et un constituant vitrifiable sélectionné dans le groupe constitué par l'un des éléments suivants: AlF¿3?, REF¿3?, NH¿5?F¿2?, NaF, Na¿2?SiF¿6? ainsi que par Na¿3?AlF¿6?.

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