IEC 61978-1:20 24作为IEC 61978-1:20 24 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 61978-1:20 24适用于光纤无源色散补偿器，均表现出以下特征: -它们是光学无源的； -它们具有用于传输光功率的光输入和光输出； -端口是光纤或光纤连接器； -它们是波长敏感的； -它们可以是偏振敏感的。 该文件建立了无源色散补偿器的统一要求。这第四版取消并取代了2014年出版的第三版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)术语和定义与IEC TS 62627-09的协调； b)关于要求的第4条的变更。

IEC 61978-1:2024 is available as IEC 61978-1:2024 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61978-1:2024 applies to fibre optic passive chromatic dispersion compensators, all exhibiting the following features:
- they are optically passive;
- they have an optical input and an optical output for transmitting optical power;
- the ports are optical fibres or optical fibre connectors;
- they are wavelength sensitive;
- they can be polarization sensitive.
This document establishes uniform requirements for the passive chromatic dispersion compensator. This fourth edition cancels and replaces the third edition published in 2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) harmonization of terms and definitions with IEC TS 62627-09;
b) change of Clause 4 regarding requirements.