Effect of H2/O2 ratio on the GeO2 concentration profile in SiO2:GeO2 glass preforms prepared by vapor-phase axial deposition

被引：8

作者：

Cuevas, RF ^{[1
]}

Gusken, E ^{[1
]}

Sekiya, EH ^{[1
]}

Ogata, DY ^{[1
]}

Torikai, D ^{[1
]}

Suzuki, CK ^{[1
]}

机构：

[1] Univ Estadual Campinas, Dept Mat Engn, Fac Mech Engn, Lab Integrated Quartz Cycle, BR-13083970 Campinas, SP, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2000年 / 273卷 / 1-3期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/S0022-3093(00)00134-4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

GeO2 radial concentration in silica glass preforms, prepared by vapor-phase axial deposition (VAD) method, was analyzed by X-ray fluorescence (XRF) measurements. The results were used to evaluate the effect of the H-2/O-2 ratio used during the deposition process in the formation of the GeO2 concentration profile. Considering four different H-2/O-2 ratios, GeO2 distribution was observed to decrease monotonically with the increasing radius for H-2/O-2 less than or equal to 1.5, and the acute shape around the core center of the GeO2 concentration profile, decreased with increasing H-2/O-2 ratio. When the ratio H-2/O-2 = 2.5, the central doping of GeO2 was minimal, and a constant distribution was obtained along glass preform radii. The results seem to indicate that the control of spatial distribution in the concentration of GeO2 deposited is favorable for the ratio H-2/O-2 less than or equal to 1.5. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：252 / 256

页数：5

共 9 条

[1]

IZAWA T, 1987, OPTICAL FIBERS MAT F, P123

[2]

IZAWA T, 1979, ECL TECHNOL J, V26, P2531

[3] DEPOSITION PROPERTIES OF SIO2-GEO2 PARTICLES IN THE FLAME HYDROLYSIS REACTION FOR OPTICAL FIBER FABRICATION [J].