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EVS-EN IEC 60793-1-40:2019

Optical fibres - Part 1-40: Attenuation measurement methods

General information
Valid from 15.05.2019
Base Documents
IEC 60793-1-40:2019; EN IEC 60793-1-40:2019
Directives or regulations
None

Standard history

Status
Date
Type
Name
15.05.2019
Main
09.07.2004
Main
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.
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