适用于使用含有稀土掺杂剂的活性纤维的光纤放大器，目前市面上有售。通过过滤光功率计测试方法，确定准确可靠测量以下参数的统一要求: -带外插入损耗；-带外反向插入损耗。主要的重大变化如下:a）适用范围已扩展到所有商用光放大器，b）增加了第9条EMC。

Applies to optical fibre amplifiers using active fibres, containing rare-earth dopants, presently commercially available. Establishes uniform requirements for accurate and reliable measurements, by means of the filtered optical power meter test method, of the following OFA parameters: - out-of-band insertion loss; - out-of-band reverse insertion loss. The main significant changes are the following: a) the applicability has been extended to all commercially available optical amplifiers, b) Clause 9, EMC, has been added.