EP 1144324 A2 20011017 - TANTALA DOPED OPTICAL WAVEGUIDE AND METHOD OF MANUFACTURE
Title (en)
TANTALA DOPED OPTICAL WAVEGUIDE AND METHOD OF MANUFACTURE
Title (de)
OPTISCHER WELLENLEITER, DOTIERT MIT TANTALUMOXID UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
GUIDE D'ONDE DOPE AU TANTALE ET SON PROCEDE DE FABRICATION
Publication
Application
Priority
- US 9929225 W 19991209
- US 11436998 P 19981230
Abstract (en)
[origin: WO0039039A2] The present invention is directed to low loss optical waveguides doped with tantala and methods for 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 cane 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.
[origin: WO0039039A2] 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.
IPC 1-7
IPC 8 full level
G02B 6/00 (2006.01); C03B 20/00 (2006.01); C03B 37/014 (2006.01); C03B 37/018 (2006.01); C03C 3/06 (2006.01); C03C 13/04 (2006.01); G02B 6/02 (2006.01)
CPC (source: EP)
C03B 37/01413 (2013.01); C03B 37/01446 (2013.01); C03C 3/06 (2013.01); C03C 13/045 (2013.01); G02B 6/02 (2013.01); C03B 2201/40 (2013.01); C03B 2207/90 (2013.01); C03C 2201/40 (2013.01); C03C 2203/40 (2013.01)
Citation (search report)
See references of WO 0039039A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0039039 A2 20000706; WO 0039039 A3 20001109; AU 3996700 A 20000731; CA 2357777 A1 20000706; CN 1332703 A 20020123; EP 1144324 A2 20011017; JP 2002533295 A 20021008; TW 421724 B 20010211
DOCDB simple family (application)
US 9929225 W 19991209; AU 3996700 A 19991209; CA 2357777 A 19991209; CN 99815207 A 19991209; EP 99972023 A 19991209; JP 2000590956 A 19991209; TW 88122962 A 19991220