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  • BSI
    BS EN IEC 60793-1-34:2021 Optical fibres - Measurement methods and test procedures. Fibre curl
    Edition: 2021
    $435.35
    / user per year

Description of BS EN IEC 60793-1-34:2021 2021

IEC 60793-1-34:2021 is available as IEC 60793-1-34:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 60793-1-34:2021 establishes uniform requirements for the mechanical characteristic: fibre curl or latent curvature in uncoated optical fibres, i.e. a specified length of the fibre has been stripped from coating. Fibre curl has been identified as an important parameter for minimizing the splice loss of optical fibres when using passive alignment fusion splicers or active alignment mass fusion splicers.Two methods are recognized for the measurement of fibre curl, in uncoated optical fibres: - method A: side view microscopy; - method B: laser beam scattering. Both methods measure the radius of curvature of an uncoated fibre by determining the amount of deflection that occurs as an unsupported fibre end is rotated about the fibre's axis. Method A uses visual or digital video methods to determine the deflection of the fibre while method B uses a line sensor to measure the maximum deflection of one laser beam relative to a reference laser beam. By measuring the deflection behaviour of the fibre as it is rotated about its axis and understanding the geometry of the measuring device, the fibre's radius of curvature can be calculated from simple circular models, the derivation of which are given in Annex C. Both methods are applicable to type B optical fibres as described in IEC 60793 (all parts). Method A is the reference test method, used to resolve disputes. 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: - modification of several derivation equations for laser scattering; - change of angular increment from 10° to 30° to 10° to 45°; - change of Annex B from informative to normative.

Standard NumberBS EN IEC 60793-1-34:2021
TitleOptical fibres - Measurement methods and test procedures. Fibre curl
StatusDefinitive
Publication Date2021-03-26
ReplacesBS EN 60793-1-34:2006
Identical National Standard OfEN 60793-1-34 Ed.3.0, IEC 60793-1-34 Ed.3.0
DescriptorsFibre optics, Radius, Deflection tests, Optical measurement, Electronic equipment and components, Optical fibres, Dimensional measurement, Microscopic analysis, Temperature measurement, Optical communication systems, Mechanical behaviour of materials, Curvature, Test methods, Environmental testing, Fibre optic cables
ICS29.260.01 Electrical equipment for working in special conditions in general, 13.260 Protection against electric shock. Live working, 29.240.20 Power transmission and distribution lines, 33.180.10 Fibres and cables
CommitteeGEL/86/1
ISBN978 0 539 04653 3
PublisherBSI
Pages24

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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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