This Recommendation: gives general information on fundamental types of optical fibre attenuator, their field of application and the main requirements about their Characteristics in terms of optical, mechanical and environmental behaviour; makes a classification of these components in terms of the configurations used in optical fibre plants; reports all the important optical parameters and gives general specifications on the optical, mechanical and environmental performances of optical fibre attenuators; reports the main testing methods of optical fibre attenuators. This Recommendation refers to single-mode optical fibre attenuators only because this fibre is mostly used in present telecommunication systems.
ITU-T L.31 SPANISH-1996由国际电信联盟 IX-ITU 发布于 1996。
ITU-T L.31 SPANISH-1996 在中国标准分类中归属于: M33 光通信设备。
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