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  • BSI
    BS EN IEC 60793-1-49:2018 - TC Tracked Changes. Optical fibres - Measurement methods and test procedures. Differential mode delay
    Edition: 2020
    $620.36
    / user per year

Description of BS EN IEC 60793-1-49:2018 - TC 2020

IEC 60793-49:2018 applies only to multimode, graded-index glass-core (category A1) fibres. The test method is commonly used in production and research facilities, but is not easily accomplished in the field.  This document describes a method for characterizing the modal structure of a graded-index multimode fibre. This information is useful for assessing the bandwidth performance of a fibre especially when the fibre is intended to support a range of launch conditions, for example, those produced by standardized laser transmitters. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) better alignment with original intent by filling some omissions and therefore improving measurement rigor;
b) the measurement of fibres with smaller differential mode delay (and higher modal bandwidth) such as type A1a.3 fibres of IEC 60793-2-10  that are used in constructing OM4 performance category cables; new requirements on specifying detector amplitude and temporal response, specimen deployment conditions, four-quadrant scanning, and uniformity of radial locations for calculating bandwidth.
Keywords: modal structure of a graded-index multimode fibre, bandwidth performance

Standard NumberBS EN IEC 60793-1-49:2018 - TC
TitleTracked Changes. Optical fibres - Measurement methods and test procedures. Differential mode delay
StatusDefinitive
Publication Date2020-02-27
DescriptorsFibres, Glass fibres, Fibre optics, Test methods, Measurement, Optical fibres
ICS33.180.10 Fibres and cables
CommitteeGEL/86/1
ISBN978 0 539 11687 8
PublisherBSI
Pages0

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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