Title :
The influence of codopants and fabrication conditions on germanium defects in optical fiber preforms
Author :
Atkins, G.R. ; Poole, S.B. ; Sceats, M.G. ; Simmons, H.W. ; Nockolds, C.E.
Author_Institution :
Sydney Univ., NSW, Australia
Abstract :
The GeE´ defect concentration in MCVD germanosilicate preforms, as measured by cathodoluminescence profiles, is dramatically reduced by the addition of phosphorus as a codopant. The GeE´ concentration is increased by using higher deposition temperatures and oxygen deficient conditions.<>
Keywords :
cathodoluminescence; chemical vapour deposition; germanate glasses; luminescence of inorganic solids; optical fibres; optical workshop techniques; phosphosilicate glasses; GeE´ defect concentration; MCVD germanosilicate preforms; SiO/sub 2/-GeO/sub 2/-P/sub 2/O/sub 5/ glass; cathodoluminescence profiles; codopants; fabrication conditions; higher deposition temperatures; optical fiber preforms; oxygen deficient conditions; Atomic layer deposition; Australia; Chemical technology; Electron microscopy; Germanium; Optical device fabrication; Optical fibers; Preforms; Silicon compounds; Temperature;
Journal_Title :
Photonics Technology Letters, IEEE
