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光纤的高强度是光纤在光通信技术上应用的必要条件。近年来的大量研究工作虽使光纤的强度有了很大的提高,但光纤的断裂行为和影响其强度的因素的理解还不是很清楚的。因此,为了长距离地和长期地使用光纤,进一步研究上述两方面的问题则具有非常重要的意义。 本文阐述了玻璃的理论强度和葛里菲斯微裂纹对玻璃实际强度的影响,分析了许多作者应用韦布尔分布处理光纤强度数据和应用应力腐蚀理论解释光纤疲劳特性的结果,最后对提高光纤的强度提出了几点意见。
The high strength of optical fiber is a necessary condition for the application of optical fiber in optical communication technology. Although a large number of research work in recent years has greatly enhanced the strength of optical fibers, the understanding of the fracture behavior of optical fibers and the factors affecting their strength is not yet clear. Therefore, in order to use optical fibers over long distances and for a long time, it is very important to further study the above two problems. This paper describes the theoretical strength of glass and Griffiths microcracks on the actual strength of the glass, the analysis of many authors applied Weibull distribution of fiber strength data and the application of stress corrosion theory to explain the results of fiber fatigue properties, and finally to improve the optical fiber Intensity made a few comments.