This part of IEC 61290 applies to all commercially available optical amplifiers (OAs) and optically amplified sub-systems. It applies to OAs using optically pumped fibres (OFAs based on either rare-earth doped fibres or on the Raman effect), semiconductor OAs (SOAs), and waveguides (POWAs)
GSO IEC 61290-5-1:2014 history
2014GSO IEC 61290-5-1:2014 Optical amplifiers - Test methods - Part 5-1: Reflectance parameters - Optical spectrum analyzer method