BS EN IEC 61280-1-4:2023 - Page 2

Fibre optic communication subsystem test procedures. General communication subsystems. Light source encircled flux measurement method | Status: Current

1 Scope This part of IEC 61280 establishes the characterization process of the encircled flux measurement method of light sources intended to be used with multimode fibre. This document sets forth a procedure for the collection of two-dimensional fibre optic nearfield greyscale data and subsequent reduction to one-dimensional data expressed as a set of three sampled parametric functions of radius from the fibre’s optical centre. Estimation of the fibre core diameter is not an objective of this document.