Evaluation of solarization resistant optical fibers under gamma-ray irradiation and temperature stress

Proceedings of 2005 IEEE/LEOS Workshop on Fibres and Optical Passive Components, 2005. Pub Date : 2005-06-22 DOI:10.1109/WFOPC.2005.1462164

D. Sporea, A. Sporea

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Abstract

Five types of large diameter optical fibers (600 /spl mu/m and 1000 /spl mu/m core diameter) having either an enhanced UV transmission or being solarization resistant were subjected to gamma-ray irradiation, at a dose rate of 0.3 kGy/h /spl plusmn/ 5%, up to a total irradiation dose of 113 kGy, at room temperature. The radiation induced optical absorption in the UV-visible spectral range (200 nm - 450 nm) was monitored, off-line, for each irradiation steps. For some samples, after each irradiation a temperature stress was applied to investigate the thermal annealing of the optical absorption. The dynamics of the irradiation induced color centers was evaluated using a Gaussian deconvolution of the absorption spectra, in the UV spectral range. One of the solarization resistant optical fiber has a very good radiation resistance. This optical fiber loses its quality if it is heated prior to the irradiation. The amplitude and the location of the radiation induced optical attenuation peaks depend on the optical fiber type and the dimension of its core.

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射线辐照和温度应力下耐晒光纤的性能评价

在室温下，对五种具有增强紫外线透射性或抗日晒性的大直径光纤(芯径分别为600 /spl μ m和1000 /spl μ m μ m)进行γ射线辐照，辐照剂量率为0.3 kGy/h /spl + usmn/ 5%，辐照总剂量为113 kGy。在紫外-可见光谱范围内(200 nm - 450 nm)，离线监测每个辐照步骤的辐射诱导光吸收。对于一些样品，每次辐照后施加温度应力来研究光学吸收的热退火。在紫外光谱范围内，利用吸收光谱的高斯反褶积来评估辐照诱导色心的动力学。其中一种抗日晒光纤具有很好的抗辐射性能。这种光纤如果在辐照前加热就会失去质量。辐射诱导光衰减峰的幅度和位置取决于光纤的类型和纤芯的尺寸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of 2005 IEEE/LEOS Workshop on Fibres and Optical Passive Components, 2005.

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