BS PD IEC/TR 62324:2007 is applicable to the Raman gain efficiency measurement of a singlemodetransmission optical fibre. It is useful in assessing the fibre's performance in Ramanamplified transmission systems.This technical report describes a method that uses two unmodulated continuous waves tomeasure the Raman gain efficiency of a single-mode transmission optical fibre. Thisparameter assesses the fibre's efficiency at converting input pump power to information signalpower.Cross References:IEC 60793-1-22IEC 60793-1-40IEC 60825-1 IEC 60825-2