Degradation of UV transmitting optical fibers under nuclear reactor neutron exposure is reported. Four type of optical fibers (solarization resistant, H2-loaded;UV transmission standard OH;UV enhanced transmission, hi...Degradation of UV transmitting optical fibers under nuclear reactor neutron exposure is reported. Four type of optical fibers (solarization resistant, H2-loaded;UV transmission standard OH;UV enhanced transmission, high OH, H2-loaded;high OH, deep UV enhanced) were exposed to neutron fluences up to 4 x 1017 n/cm2. The optical transmission was measured off-line over the 200 nm – 900 nm spectral range and the build-up of color centers was monitored.展开更多
The effects of gamma ray(γ-ray)radiation and electron beam(e-beam)radiation on Rayleigh scattering coefficient in single-mode fiber are experimentally investigated.Utilizing an optical time domain reflectometry(OTDR)...The effects of gamma ray(γ-ray)radiation and electron beam(e-beam)radiation on Rayleigh scattering coefficient in single-mode fiber are experimentally investigated.Utilizing an optical time domain reflectometry(OTDR),the power distribution curves of the irradiated fibers are obtained to retrieve the corresponding radiation-induced attenuation(RIA).Based on the backscattering power levels and the measured RIAs,the Rayleigh scattering coefficients can be characterized quantitatively for each fiber sample.Under the given radiation conditions,Rayleigh scattering coefficients have been changed very little while RIAs have been changed significantly.Furthermore,simulations have been implemented to verify the validity of the measured Rayleigh scattering coefficient,including the splicing points.展开更多
文摘Degradation of UV transmitting optical fibers under nuclear reactor neutron exposure is reported. Four type of optical fibers (solarization resistant, H2-loaded;UV transmission standard OH;UV enhanced transmission, high OH, H2-loaded;high OH, deep UV enhanced) were exposed to neutron fluences up to 4 x 1017 n/cm2. The optical transmission was measured off-line over the 200 nm – 900 nm spectral range and the build-up of color centers was monitored.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.41527805 and 61635005)Sichuan Youth Science and Technology Foundation(Grant No.2016JQ0034)+3 种基金the 111 Project(Grant No.B14039)The Romanian authors acknowledge the support of the Romanian Executive Agency for Higher Education,Research,Development and Innovation Funding(Grant No.UEFISCDI),under the contract“Sensor Systems for Secure Operation of Critical Installations”.G.Peng acknowledges the support by Science and Technology Commission of Shanghai Municipality,China(Grant Nos.SKLSFO2015-01 and 15220721500)by the Hisilicon Innovation Research Program(HIRP)(Grant No.HO2017050001CZ).
文摘The effects of gamma ray(γ-ray)radiation and electron beam(e-beam)radiation on Rayleigh scattering coefficient in single-mode fiber are experimentally investigated.Utilizing an optical time domain reflectometry(OTDR),the power distribution curves of the irradiated fibers are obtained to retrieve the corresponding radiation-induced attenuation(RIA).Based on the backscattering power levels and the measured RIAs,the Rayleigh scattering coefficients can be characterized quantitatively for each fiber sample.Under the given radiation conditions,Rayleigh scattering coefficients have been changed very little while RIAs have been changed significantly.Furthermore,simulations have been implemented to verify the validity of the measured Rayleigh scattering coefficient,including the splicing points.
