SR EN IEC 60793-1-40:2019

Optical fibres - Part 1-40: Attenuation measurement methods

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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General information

Status : Valid
Approval date : 11/29/2019
Withdrawal date : 1/31/2028
Number of pages : 76
ICS : 33.180.10 Fibres and cables
Technical Committee : 138 - Optical fibres

Relations with other standards:

Replaces SR EN 60793-1-40:2005
Replaced by SR EN IEC 60793-1-40:2025