scope:

Applies to the family of fibre optic attenuators, which have all of the following general features: they are passive components, in that they contain no opto-electronic or other transducing elements; they have two ports for the transmission of optical power, and attenuate the transmitted power in a fixed or variable fashion; the ports are optical fibres or optical fibre connectors. The object is to establish uniform requirements for optical, mechanical and environmental properties as well as measurement and test procedures for quality assessment.