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IEC 60793-2
Edition 9.0 2019-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2: Product specifications – General
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IEC 60793-2
Edition 9.0 2019-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Optical fibres –
Part 2: Product specifications – General
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-7631-0
– 2 – IEC 60793-2:2019 RLV © IEC 2019
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 6
4 Quality assurance . 7
5 Construction of optical fibres . 8
5.1 Class A – Multimode fibres . 8
5.2 Class B – Single-mode fibres . 10
5.3 Class C – Single-mode fibres for intraconnection . 13
5.4 Class D – Polarization-maintaining fibres . 14
6 General requirements . 14
6.1 Coating . 14
6.2 Interface with the coating . 14
6.3 Colours of the coating . 14
Annex A (normative) Existing multimode fibres . 15
Annex B (normative) Existing single-mode fibres . 17
B.1 Existing single-mode fibres . 17
B.2 Existing fibres for intraconnection . 18
B.3 Existing polarization-maintaining fibres . 19
Bibliography . 20
Table 1 – Sectional specifications . 5
Table 2 – Main categories of multimode fibres . 8
Table 3 – Sub-categories of multimode fibres . 9
Table 4 – Categories of glass core/glass clad single-mode fibres . 11
Table 5 – Categories of glass core/glass clad single-mode fibres for intraconnection . 13
Table 6 – Categories of glass core/glass clad polarization-maintaining fibres . 14
Table A.1 – Existing multimode fibres . 15
Table B.1 – Existing single-mode fibres . 17
Table B.2 – Existing fibres for intraconnection . 18
Table B.3 – Existing polarization-maintaining fibres . 19
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2: Product specifications –
General
FOREWORD
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– 4 – IEC 60793-2:2019 RLV © IEC 2019
International Standard IEC 60793-2 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This ninth edition cancels and replaces the eighth edition published in 2015. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) introduction of the revised fibre designations for most A1 sub-category fibres and all
class B single-mode fibres;
b) addition of the new fibre model (A1-OM5) defined for A1 category;
c) addition of class D polarization maintaining fibres.
This document is to be read in conjunction with those parts of the IEC 60793-1 series that
address individual measurements and tests for attributes of optical fibres.
The text of this International Standard is based on the following documents:
FDIS Report on voting
86A/1964/FDIS 86A/1974/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all the parts in the IEC 60793 series, published under the general title Optical fibres,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
OPTICAL FIBRES –
Part 2: Product specifications –
General
1 Scope
This part of IEC 60793 contains the general specifications for both multimode and single-
mode optical fibres.
Sectional specifications for each of the four categories of multimode fibres: A1, A2, A3, and
A4 (part of the multimode fibre class A) contain requirements specific to each category.
Sectional specifications for each of the two three single-mode fibre classes, B, C and D
contain requirements common to each class.
Each sectional specification includes family specifications (in normative annexes) that contain
requirements for the applicable category or sub-categories. These sub-categories are
distinguished on the basis of different fibre types or applications.
The requirements of this document apply to all classes.
Each sectional specification contains the requirements that are common to all the family
specifications that are within it. These common requirements are copied to the family
specification for ease of reference.
Tests or measurement methods are defined for each specified attribute. Where possible,
these definitions are by reference to an IEC International Standard (see IEC 60793-1 series) –
otherwise the test or measurement method is outlined in the relevant sectional specification.
Table 1 defines the sectional specifications. The relevant family specifications are defined
within the sectional specifications as normative annexes (see Tables 2 to 5).
Annexes A and B summarize the existing fibre specifications.
Table 1 – Sectional specifications
Document ID Fibre Cladding Core material Index profile
category/class material
IEC 60793-2-10 A1 multimode Glass Glass Graded
IEC 60793-2-20 A2 multimode Glass Glass Quasi-step or step
IEC 60793-2-30 A3 multimode Plastic Glass Step or graded (under
consideration)
IEC 60793-2-40 A4 multimode Plastic Plastic Step, multi-step or
graded
IEC 60793-2-50 B single-mode Glass Glass Not applicable
IEC 60793-2-60 C single-mode Glass Glass Not applicable
IEC 60793-2-70 D polarization- Glass Glass Not applicable
maintaining
...