Optical fibres Measurement methods and test procedures. Numerical aperture measurement

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-05-2015

Publisher

British Standards Institution

FOREWORD
1 Scope
2 Normative references
3 Overview of method
4 Reference test method
5 Apparatus
6 Sampling and specimens
7 Procedure
8 Calculations
9 Results
10 Specification information
Annex A (informative) - Mapping NA measurement to
         alternative lengths
Annex B (normative) - Product specific default values for
         NA measurement
Annex ZA (normative) - Normative references to
         international publications with their corresponding
         European publications

Defines uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes.

This part of IEC60793 establishes uniform requirements for measuring the numerical aperture of optical fibre, thereby assisting in the inspection of fibres and cables for commercial purposes. The numerical aperture (NA) of categories A1, A2, A3 and A4 multimode fibre is an important parameter that describes a fibre\'s light-gathering ability. It is used to predict launching efficiency, joint loss at splices, and micro/macrobending performance. The numerical aperture is defined by measuring the far-field pattern (NA ff). In some cases the theoretical numerical aperture (NA th) is used in the literature, which can be determined from measuring the difference in refractive indexes between the core and cladding. Ideally these two methods should produce the same value.

Committee	GEL/86/1
DevelopmentNote	Supersedes 98/262949 DC. Partially supersedes BS EN 188000. (06/2002) Supersedes 13/30285351 DC. (05/2015)
DocumentType	Standard
Pages	24
PublisherName	British Standards Institution
Status	Current
Supersedes	13/30285351 DC : 0 BS EN 60793-1-43:2002 98/262949 DC : AUG 98

Standards	Relationship
I.S. EN 60793-1-43:2015	Identical
DIN EN 60793-1-43 : 2015	Identical
EN 60793-1-43:2015	Identical
IEC 60793-1-43:2015	Identical
NF EN 60793-1-43 : 2002	Identical
CLC/TR 50506-2 : 2009	Identical

IEC 60793-2-20:2015	Optical fibres - Part 2-20: Product specifications - Sectional specification for category A2 multimode fibres
IEC 60793-1-1 : 2017	OPTICAL FIBRES - PART 1-1: MEASUREMENT METHODS AND TEST PROCEDURES - GENERAL AND GUIDANCE
EN 60793-1-21:2002	Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry
IEC 60793-2-10:2017	Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres
EN 60793-1-1:2017	Optical fibres - Part 1-1: Measurement methods and test procedures - General and guidance
IEC 60793-2-30:2015	Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres
EN 60793-2-40:2016	Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres
IEC 60793-2-40:2015	Optical fibres - Part 2-40: Product specifications - Sectional specification for category A4 multimode fibres
EN 60793-2-10:2017	Optical fibres - Part 2-10: Product specifications - Sectional specification for category A1 multimode fibres
EN 60793-1-22:2002	Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement
EN 60793-2-30:2015	Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres
EN 60793-2-20:2016	Optical fibres - Part 2-20: Product specifications - Sectional specification for category A2 multimode fibres
IEC 60793-1-21:2001	Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry
IEC 60793-1-22:2001	Optical fibres - Part 1-22: Measurement methods and test procedures - Length measurement

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BS EN 60793-1-43:2015

Optical fibres Measurement methods and test procedures. Numerical aperture measurement

Table of Contents

Abstract

Scope

General Product Information

International Equivalents

Standards Referencing This Book

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