1 Scope
This document provides guidelines for uniform measurements of the nonlinear coefficient
of class B single-mode fibres (see IEC 60793‑2‑50) in the 1 550 nm region.
Measurements of the nonlinear coefficient are used to characterise specific single-mode
fibre designs for the purpose of system design relative to power levels and distortion
or noise effects derived from the nonlinear optical behaviour.