IEC 62077:2022作为IEC 62077:2022 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 62077:2022适用于光纤领域使用的环行器具有以下所有功能: -它们是非互易光学设备，其中每个端口是光纤或光纤连接器； -根据IEC TS 62538中提供的分类和定义，它们是无源器件； -它们具有用于定向传输光功率的三个或更多个端口。 附录A和附录B分别描述了光环行器技术和应用的示例。这第四版取消并取代了2015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: -术语和定义与IEC TS 62627-09的协调； -第4条有关规定的更改

IEC 62077:2022 is available as IEC 62077:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62077: 2022 applies to circulators used in the field of fibre optics bearing all of the following features:
- they are non-reciprocal optical devices, in which each port is either an optical fibre or fibre optic connector;
- they are passive devices in accordance with the categorization and definition provided in IEC TS 62538;
- they have three or more ports for directionally transmitting optical power.
An example of optical circulator technology and application is described in Annex A and Annex B, respectively. This fourth edition cancels and replaces the third edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- harmonization of terms and definitions with IEC TS 62627-09;
- change of Clause 4 regarding requirements