Scope and object This part of IEC 61290 applies to optical fibre amplifiers (OFAs) using active fibres@ containing rare-earth dopants@ presently commercially available. The object of this standard is to establish uniform requirements for accurate and reliable measurements@ by means of the electrical spectrum analyzer test method@ of the following OFA parameters@ as defined in clause 3 of IEC 61291-1: a) small-signal gain; b) reverse small-signal gain; c) maximum small-signal gain; d) maximum small-signal gain wavelength; e) maximum small-signal gain variation with temperature; f) small-signal gain wavelength band; g) small-signal gain wavelength variation; h) small-signal gain stability; i) polarization-dependent gain variation. NOTE - All numerical values followed by ($) are intended to be currently under consideration