本技术报告适用于单模传输光纤的拉曼增益效率测量。它有助于评估光纤在拉曼放大传输系统中的性能。本技术报告描述了一种使用两个未调制连续波测量单模传输光纤拉曼增益效率的方法。此参数评估光纤将输入泵功率转换为信息信号功率的效率。第二版与第一版的不同之处在于，在前一版中，在图2之前的段落中，波长和光学频率之间的关系存在近似值，导致实验室间协议存在一些不一致。这个近似值已被删除。

This technical report is applicable to the Raman gain efficiency measurement of a single-mode transmission optical fibre. It is useful in assessing the fibre's performance in Raman amplified transmission systems. This technical report describes a method that uses two unmodulated continuous waves to measure the Raman gain efficiency of a single-mode transmission optical fibre. This parameter assesses the fibre's efficiency at converting input pump power to information signal power. This second edition differs from the first in that in the previous edition, in the paragraph before Figure 2, there was an approximation of the relationship between wavelength and optical frequency that led to some inconsistencies in interlaboratory agreement. This approximation has been removed.