BS EN 60793-1-46-2002 光学纤维.测量方法和试验规程.光透射率变化的监测

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标准号:BS EN 60793-1-46-2002
中文标准名称:光学纤维.测量方法和试验规程.光透射率变化的监测
英文标准名称:Optical fibres - Measurement methods and test procedures - Monitoring of changes in optical transmittance
标准类型:M33
发布日期:2002/5/23 12:00:00
实施日期:2002/5/23 12:00:00
中国标准分类号:M33
国际标准分类号:33.180.10
适用范围:This part of IEC 60793 establishes uniform requirements for the monitoring of changes in optical transmittance, thereby assisting in the inspection of fibres and cables for commercial purposes. This standard gives two methods for monitoring the changes in optical transmittance of optical fibres and cables that occur during mechanical or environmental testing, or both. It provides a monitor in the change of optical transmission characteristics arising from optical discontinuity, physical defects and modifications of the attenuation slope: - method A: change in transmittance by transmitted power; - method B: change in transmittance by backscattering. Methods A and B apply to the monitoring of all categories of the following fibres: - class A: multimode fibres; - class B: single-mode fibres. Information common to both measurements is contained in clauses 1 to 8, and information pertaining to each individual method appears in annexes A, and B respectively.

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