RADIATION-RESISTANT OPTICAL FIBER

PURPOSE:To improve the radiation resistance of an optical fiber, by adding specific range of OH groups to a high purity quartz glass core, and using the core as the core of the optical fiber. CONSTITUTION:The core 1 made of high-purity quartz glass added with 0.1- several % OH groups is covered with...

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Bibliographic Details
Main Authors NISHIMOTO MASAYUKI, IINO AKIRA, NISHIMURA MASAO, FURUI YASUROU
Format Patent
LanguageEnglish
Published 26.07.1983
Subjects
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS
CHEMISTRY
GLASS
JOINING GLASS TO GLASS OR OTHER MATERIALS
METALLURGY
MINERAL OR SLAG WOOL
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS
SURFACE TREATMENT OF GLASS
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Summary:PURPOSE:To improve the radiation resistance of an optical fiber, by adding specific range of OH groups to a high purity quartz glass core, and using the core as the core of the optical fiber. CONSTITUTION:The core 1 made of high-purity quartz glass added with 0.1- several % OH groups is covered with the clad 2 to obtain the objective radiation-resistant optical fiber. Experimental results show that the loss increase of the fiber decreases rapidly when the OH concentration added to the core becomes >=1,000ppm. Although the increase of the OH concentration improves the radiation resistance, its upper limit is set to several % because too high concentration results in the deterioration of the strength of the optical fiber. The radiation resistance can be further improved by the addition of fluorine and/or chlorine to the OH-containing core 1.
Bibliography:Application Number: JP19820008646