BS EN IEC 60793-1-47:2018 - Optical fibres. Measurement methods and test procedures. Macrobending loss

BS EN IEC 60793-1-47:2018

Optical fibres. Measurement methods and test procedures. Macrobending loss

Status : Current   Published : February 2018



This part of IEC 60793 establishes uniform requirements for measuring the macrobending loss of single-mode fibres (class B) at 1 550 nm or 1 625 nm, category A1 multimode fibres at 850 nm or 1 300 nm, and category A3 and A4 multimode fibres at 650 nm, 850 nm or 1 300 nm, thereby assisting in the inspection of fibres and cables for commercial purposes.

This document gives two methods for measuring macrobending sensitivity:

  • Method A – Fibre winding, pertains to class B single-mode fibres and category A1 multimode fibres.

  • Method B – Quarter circle bends, pertains to category A3 and A4 multimode fibres.

For both of these methods, the macrobending loss can be measured utilizing general fibre attenuation techniques, for example the power monitoring technique (see Annex A) or the cut-back technique (see Annex B). Methods A and B are expected to produce different results if they are applied to the same fibre. This is because the key difference between the two methods is the deployment, including the bend radius and length of fibre that is bent. The reason for the difference is that A3 and A4 multimode fibres are expected to be deployed in short lengths with a smaller number of bends per unit fiber length compared to single-mode and category A1 multimode fibres.

In this document, the "curvature radius" is defined as the radius of the suitable circular shaped support (e.g. mandrel or guiding groove on a flat surface) on which the fibre can be bent.

In addition, informative Annex E has been added to approximate bend loss for class B single-mode fibres across a broad wavelength range at various effective bends.

Standard NumberBS EN IEC 60793-1-47:2018
TitleOptical fibres. Measurement methods and test procedures. Macrobending loss
Publication Date26 February 2018
Normative References(Required to achieve compliance to this standard)EN 60793-1-1:2017, IEC 60793-1-1:2017, IEC 60793-2, IEC 60793-1, EN 60793-2-10, EN 61280-1-4, IEC 60793-2-10, EN 60793-2, EN 61280-4-1, IEC 61280-1-4, IEC 61280-4-1, IEC 60793
Informative References(Provided for Information)IEC 60793-1-46, EN 60793-2-50, EN 60793-1-40, IEC TR 62547, IEC 60793-1-40, IEC 60793-2-50, EN 60793-1-46, ITU-T G Suppl. 59:2016
ReplacesBS EN 60793-1-47:2009
International RelationshipsIEC 60793-1-47:2017,EN IEC 60793-1-47:2018
Draft Superseded By16/30337880 DC
DescriptorsFibre optic cables, Measurement, Fibre optics, Environmental testing, Optical communication systems, Electronic equipment and components, Optical fibres, Optical measurement, Bend testing, Power losses
Title in FrenchFibres optiques Méthodes de mesure et procédures d'essai. Pertes par macrocourbures
Title in GermanLichtwellenleiter Messmethoden und Prüfverfahren. Makrobiegeverlust
ISBN978 0 580 93416 2
File Size2.195 MB

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