Tantala doped optical waveguide and method of manufacture

Details Tantala doped optical waveguide and method of manufacture Tantala doped optical waveguide and method of manufacture

C - Chemistry, Metallurgy

03

B

C03B 37/014 (2006.01) C03B 13/04 (2006.01) C03C 3/06 (2006.01) C03C 13/04 (2006.01) G02B 6/02 (2006.01)

Patent

CA 2357777

The present invention is directed to low loss optical waveguides doped with tantala and methods of manufacturing such waveguides. SiO2 soot is doped with Ta2O5 to form a soot blank which is consolidated under conditions suitable to prevent the crystallization within the Ta2O5-SiO2 containing waveguides. The resulting rod is then either drawn into an optical fiber or overclad and subequently drawn into an optical fiber. High temperature consolidation in either a gaseous atmosphere or vacuum atmosphere is used to sinter and vitrify the soot blank prior to drawing to produce a low loss optical waveguide fiber.

La présente invention porte sur des guides d'onde optiques à faible perte dopés au tantale et sur leurs procédés de fabrication. Une suie de SiO¿2? est dopée au Ta¿2?O¿5? de façon à obtenir une ébauche qui est consolidée dans des conditions appropriées pour prévenir la cristallisation dans les guides d'onde contenant Ta¿2?O¿5?-SiO¿2?. La tige obtenue est alors étirée sous forme d'une fibre optique ou recouverte d'une gaine et ensuite étirée sous forme d'une fibre optique. La consolidation à haute température sous atmosphère gazeuse ou à vide est utilisée pour fritter et vitrifier l'ébauche avant l'étirage afin de produire une fibre optique de guide d'onde à faible perte.

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