Accession Number : ADP000592

Title :   Pure-Silica Core Optical Fiber and Fiber Cable for Radiation Fields,

Corporate Author : DAINICHI-NIPPON CABLES LTD TOKYO (JAPAN)

Personal Author(s) : Tanaka,Hiroyuki ; Hirashima,Toshihiro ; Shintani,Takeshi

Report Date : NOV 1982

Pagination or Media Count : 7

Abstract : Using C0 60 gamma ray and fast neutron flux from a research reactor, in situ measurements of radiation induced optical attenuation have been conducted to characterize the radiation response of pure-silica core fibers and doped-silica core fibers. It has been revealed that pure-silica core fibers fabricated by Modified Rod-in-Tube method have much higher radiation resistivity than Ge/P-and B/F/P-doped-silica core MCVD fibers. Among the pure-silica core fibers, high-OH content grade has shown the highest resistivity in short wavelength region, whereas OH-free grade is useful in long wavelength region. Radiation hardening was observed in the high-OH content fiber during the test by long-term irradiation on pure-silica core fibers. (Author)

Descriptors :   *Fiber optics transmission lines, *Electric cables, *Electric wire, *Symposia, *Fused silica, *Gamma rays, Radiation, Glass fibers, Cores, Neutron flux, International

Distribution Statement : APPROVED FOR PUBLIC RELEASE