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Photo-Luminescence of SiO2:GeO2 Vad Fibers Heat-Treated Under Reducing Conditions

Published online by Cambridge University Press:  25 February 2011

M. Kohketsu
Affiliation:
Department of Inorganic Materials, Tokyo Institute of Technology, Ohokayama, Meguroku, Tokyo 152
H. Kawazoe
Affiliation:
Department of Inorganic Materials, Tokyo Institute of Technology, Ohokayama, Meguroku, Tokyo 152
A. Kashiwazaki
Affiliation:
Optical Fiber Division, Showa Electric Wire & Cable Co., Ltd., Minamihashimoto, Sagamihara-shi 229, JAPAN
K. Muta
Affiliation:
Optical Fiber Division, Showa Electric Wire & Cable Co., Ltd., Minamihashimoto, Sagamihara-shi 229, JAPAN
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Abstract

Photo-luminescence(PL) in VAD silica preforms sintered under reducing or oxidizing condition was observed. Two types of diamagnetic luminescence centers and the Si-E′ center were found in pure silica glass. The intensity of photoluminescence was strongly dependent on the sintering atmosphere. This observation suggests that reduced Si species, Si(III) and Si(II), are responsible for the luminescence.

Type
Research Article
Copyright
Copyright © Materials Research Society 1987

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References

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