Glass composition

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 3/068 (2006.01) C03C 3/15 (2006.01) C03C 3/155 (2006.01) C03C 3/253 (2006.01) C03C 4/08 (2006.01) H01S 3/00 (2006.01) H01S 3/17 (2006.01) H01S 3/067 (2006.01) H01S 3/16 (2006.01)

Patent

CA 2370503

A glass composition well suited for use in optical amplification consists of an erbium-doped borate glass composition comprising at least 30 mole percent of B2O3. This family of glasses provides a wide useful bandwidth (50 nm and greater) for optical amplification around the 1545 nm region. One preferred sub-family of glasses contains equal to or less than 30 mol. percent of SiO2. Another preferred sub-family of glasses contains equal to or less than 5 mol.% of La2O3 and the ratio of B2O3 to (.SIGMA.X2O + .SIGMA.YO) is greater than or equal to 3.5, more preferably 4.5, where X2O represents monovalent metal oxide(s) and YO represents divalent metal oxides.

Cette composition de verre est notamment conçue pour l'amplification optique et elle se compose d'un verre de borate, dopé à l'erbium, comprenant au moins 30 moles % de B¿2?O¿3?. Cette catégorie de verres offre une grande largeur de bande (50 nm et plus) destinée à l'amplification optique dans la région de 1545 nm. Une sous-catégorie préférée de verres contient une quantité égale ou inférieure à 30 moles % de SiO¿2?. Une autre sous-catégorie préférée de verres contient une quantité égale ou inférieure à 5 moles % de La¿2?O¿3?, le rapport entre B¿2?O¿3? et (.SIGMA.X¿2?O + .SIGMA.YO) étant supérieur ou égal à 3,5, préférablement 4,5, X¿2?O représentant un (des) oxyde(s) métallique(s) monovalent(s) et YO représentant des oxydes métalliques divalents.

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