EN IEC 60793-1-40:2019

Optical fibres - Part 1-40: Attenuation measurement methods

Publication date:   Oct 16, 2019

General information

60.60 Standard published   May 10, 2019

CENELEC

CLC/TC 86A Optical fibres and optical fibre cables

European Norm

33.180.10   Fibres and cables

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Scope

This part of IEC 60793 establishes uniform requirements for measuring the attenuation of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.
Four methods are described for measuring attenuation, one being that for modelling spectral attenuation:
- method A: cut-back;
- method B: insertion loss;
- method C: backscattering;
- method D: modelling spectral attenuation.
Methods A to C apply to the measurement of attenuation for all categories of the following fibres:
- class A multimode fibres;
- class B single-mode fibres.
Method C, backscattering, also covers the location, losses and characterization of point discontinuities.
Method D is applicable only to class B fibres.
Information common to all four methods appears in Clauses 1 to 11, and information pertaining to each individual method appears in
Annexes A, B, C, and D, respectively.

Life cycle

PREVIOUSLY

WITHDRAWN
EN 60793-1-40:2003

NOW

PUBLISHED
EN IEC 60793-1-40:2019
60.60 Standard published
May 10, 2019

REVISED BY

IN_DEVELOPMENT
EN IEC 60793-1-40:2025