本欧洲电信标准（ETS）最终草案适用于传输网络中使用的光放大器（OA）设备和子系统。它包括光纤放大器（OFA）和半导体光放大器（SOA）。本ETS规定了主要用于数字传输的OA设备（如功率放大器、前置放大器或线路放大器）和OA子系统（如光放大发射器或光放大接收器）的通用特性。注1:就OFA而言，本ETS是根据铒的经验编制的- 掺杂硅基光纤放大器，在1550nm波长范围内工作。基于不同活性纤维并可能在不同波长区域运行的未来OFA不排除在本ETS之外，可能会导致附加规范以及现有规范的修改。注2:本ETS的OFA方面主要基于ITU-T建议G.661和G.662。

This final draft European Telecommunication Standard (ETS) applies to Optical Amplifier (OA) devices and sub-systems to be used in transmission networks. It covers both Optical Fibre Amplifiers (OFAs) and Semiconductor Optical Amplifiers (SOAs). This ETS specifies those generic characteristics relevant for the use of OA devices (as power amplifiers, pre-amplifiers or line amplifiers) and OA sub-systems (as optically amplified transmitters or optically amplified receivers), primarily for applications in digital transmission. NOTE 1: As far as OFAs are concerned, the present ETS has been prepared from experience with Erbium-doped, silica-based fibre amplifiers, operating in the 1 550 nm wavelength region. Future OFAs, based on different active fibres and possibly operating in different wavelength regions, are not intended to be excluded from this ETS and may lead to additional specifications, as well as to modifications of the existing ones. NOTE 2: The OFA aspects of the present ETS are mainly based on ITU-T Recommendations G.661 and G.662.