IEC 62074-1:20 14(E)适用于光纤波分复用(WDM)设备。它们具有以下所有一般功能: -它们是无源的，因为它们不包含光电或其他转换元件； -然而，它们可以仅使用温度控制来稳定器件特性； -它们排除任何光开关功能； -它们具有用于光功率的进入和/或退出的三个或更多个端口，并且根据波长以预定方式在这些端口之间共享光功率； -端口是光纤或光纤连接器。本标准建立了以下方面的统一要求:光学、机械和环境性能。第二版取消并取代了2009年出版的第一版，构成了技术修订。与上一版相比，此版本包括以下重大技术变更: -对定义进行实质性更新； -增加信息性附件C至G，举例说明有关WDM设备的技术信息。 关键词:光纤波分复用、WDM、光学、机械和环境性能要求

IEC 62074-1:2014(E) applies to fibre optic wavelength division multiplexing (WDM) devices. These have all of the following general features:
- they are passive, in that they contain no optoelectronic or other transducing elements;
- however they may use temperature control only to stabilize the device characteristics;
- they exclude any optical switching functions;
- they have three or more ports for the entry and/or exit of optical power, and share optical power among these ports in a predetermined fashion depending on the wavelength;
- the ports are optical fibres, or optical fibre connectors. This standard establishes uniform requirements for the following: optical, mechanical and environmental properties. This second edition cancels and replaces the first edition, published in 2009, and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- substantial updating to the definitions;
- the addition of informative Annexes C to G, giving examples of technical information concerning WDM devices. Keywords: fibre optic wavelength division multiplexing, WDM, requirements for optical, mechanical and environmental properties