标准摘要
[中文适用范围]: IEC 62221 技术报告描述了四种方法(A、B、C 和 D)用于测量光纤的微弯灵敏度。这四种方法的区别在于用于测量的设备及其应用:方法 A 使用可扩张鼓,适用于 A1 类和 B 类光纤;方法 B 使用固定直径鼓,适用于 A1 类和 B 类光纤;方法 C 使用平板和施加负载,适用于 A1 类和 B 类光纤;方法 D 使用固定直径鼓上的“篮编织”缠绕,适用于 A1 类和 B 类光纤。方法 A 和 B 也可用于测量光纤带状缆的微弯灵敏度。方法 A 和 C 能够测量施加的线性压力或负载范围内的微弯灵敏度。方法 B 可用于确定固定线性压力下的微弯灵敏度。方法 A、B 和 D 也可在不同温度(温度循环)下使用,前提是使用特殊低热膨胀材料(如石英鼓)。这四种方法的结果只能进行定性比较。这些方法被视为特性测试。应理解,任何方法的微弯结果在不同实验室之间可能存在显著差异。这些方法不构成用于光纤一般评估的常规测试。该参数通常不在详细规范中指定。 [外文原描述]: IEC/TR 62221:2012(E) describes four methods (A, B, C and D) for the measurement of microbending sensitivity of optical fibres. These four methods are distinguished by the equipment being used for measurements and their applications: - method A using an expandable drum and applies to category A1 and class B fibres; - method B using a fixed diameter drum and applies to category A1 and class B fibres; - method C using a plate and applied loads and applies to category A1 and class B fibres; - method D using a "basketweave" wrap on a fixed diameter drum, and applies to category A1 and class B fibres. This second edition cancels and replaces the first edition published in 2001, and constitutes a technical and editorial revision. The main changes with respect to the previous edition are: - updates related to B6 (bend-insensitive) category single-mode fibres; - inclusion of a definition for microbending and general properties; - expansion of general considerations; - more details given for each method; - addition of an Annex A. Key words: measurement of microbending sensitivity of optical fibres
英文名称Optical fibres - Measurement methods - Microbending sensitivity