Reduction of impurities in fluoride glass fibers

In order to realize a low-loss fluoride Optical fiber, impurity reduction is indispensable. The methods of recrystallization, extraction, chemical vapor-phase deposition, distillation, and sublimation were tried to purify the starting materials for a fluoride fiber. These purification methods were e...

Full description

Saved in:
Bibliographic Details
Published in:Journal of lightwave technology 1984-01, Vol.2 (5), p.587-592
Main Authors: Mitachi, S., Terunuma, Y., Ohishi, Y., Takahashi, S.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Glass
Impurities
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
Optical fiber cables
Optical fiber losses
Optical fibers
Optical losses
Optical scattering
Propagation losses
Purification
Rayleigh scattering
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to realize a low-loss fluoride Optical fiber, impurity reduction is indispensable. The methods of recrystallization, extraction, chemical vapor-phase deposition, distillation, and sublimation were tried to purify the starting materials for a fluoride fiber. These purification methods were evaluated by measuring transmission loss of the fibers prepared by using the purified materials. It was found that recrystallization was useful for reducing impurities in ZrF 4 to the level of below 1 ppm. The extraction technique could be also applicable to purification of BaF 2 and GdF 3 . It was concluded that the sublimation was the most probable purification in order to prepare fluoride materials with less than 0.1-ppm impurities. As a result, a low-loss fiber with 8.5 dB/km at 2.12 μm was obtained by using the starting materials purified by sublimation.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.1984.1073677