Reduction of impurities in fluoride glass optical fiber

A sublimation purification technique was developed for fluoride fiber materials, ZrF 4 , BaF 2 , GdF 3 , and AlF 3 . Using these purified materials and a “build-in casting” method, the low-transmission-loss of 8.5 dB/km at 2.12 µm was o btained, which is the lowest loss in an infrared ray transmitti...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1983-08, Vol.22 (8), p.537-538
Main Authors: MITACHI, S, TERUNUMA, Y, OHISHI, Y, TAKAHASHI, T
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Integrated optics. Optical fibers and wave guides
Optical and optoelectronic circuits
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Summary:A sublimation purification technique was developed for fluoride fiber materials, ZrF 4 , BaF 2 , GdF 3 , and AlF 3 . Using these purified materials and a “build-in casting” method, the low-transmission-loss of 8.5 dB/km at 2.12 µm was o btained, which is the lowest loss in an infrared ray transmitting fluoride glass fiber. The impurity level of the fiber was estimated as below 0.5 ppm by loss-factor analysis.
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.22.l537