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ILNAS-EN IEC 60793-1-40:2019 Edition 05/2019
Optical fibres - Part 1-40: Attenuation measurement methods
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Abstract

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.

Status

Standard - Active

Origin

Technical Committee :
CLC/TC 86A : Optical fibres and optical fibre cables

Implementation

start of the vote on the project    02/02/2018   date of ratification (dor)    01/05/2019
end of the vote on the project    27/04/2018   date of anouncement (doa)    01/08/2019
start of the vote on the final project    07/12/2018   date of publication (dop)    01/02/2020
end of the vote on the final project    18/01/2019   date of withdrawal (dow)    01/05/2022


Publication Official Journal
of the Grand-Duchy of Luxembourg
18/06/2019
Reference Mémorial A N° 421

Relations

Evolutions
ILNAS-EN IEC 60793-1-40:2025

Relations to older standards
ILNAS-EN 60793-1-40:2003

Relations to international standards
IEC 60793-1-40:201X 
IEC 60793-1-40:2019 

International Classification for Standards (ICS codes) :

33.180.10 : Fibres and cables