IEC 60793-2:2019

IEC 60793-2 ®
Edition 9.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2: Product specifications – General

Fibres optiques –
Partie 2: Spécifications de produits – Généralités

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IEC 60793-2 ®
Edition 9.0 2019-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2: Product specifications – General

Fibres optiques –
Partie 2: Spécifications de produits – Généralités

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.10 ISBN 978-2-8322-7600-6

– 2 – IEC 60793-2:2019 © 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 . 7
5.1 Class A – Multimode fibres . 7
5.2 Class B – Single-mode fibres . 9
5.3 Class C – Single-mode fibres for intraconnection . 10
5.4 Class D – Polarization-maintaining fibres . 11
6 General requirements . 11
6.1 Coating . 11
6.2 Interface with the coating . 11
6.3 Colours of the coating . 12
Annex A (normative) Existing multimode fibres . 13
Annex B (normative) Existing single-mode fibres . 14
B.1 Existing single-mode fibres . 14
B.2 Existing fibres for intraconnection . 15
B.3 Existing polarization-maintaining fibres . 15
Bibliography . 16

Table 1 – Sectional specifications . 5
Table 2 – Main categories of multimode fibres . 8
Table 3 – Sub-categories of multimode fibres . 8
Table 4 – Categories of glass core/glass clad single-mode fibres . 10
Table 5 – Categories of glass core/glass clad single-mode fibres for intraconnection . 11
Table 6 – Categories of glass core/glass clad polarization-maintaining fibres . 11
Table A.1 – Existing multimode fibres . 13
Table B.1 – Existing single-mode fibres . 14
Table B.2 – Existing fibres for intraconnection . 15
Table B.3 – Existing polarization-maintaining fibres . 15

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPTICAL FIBRES –
Part 2: Product specifications –
General
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
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Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
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.

– 4 – IEC 60793-2:2019 © IEC 2019
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.
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 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
– 6 – IEC 60793-2:2019 © IEC 2019
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 60304, Standard colours for insulation for low-frequency cables and wires
IEC 60793-1 (all parts), Optical fibres – Part 1: Measurement methods and test procedures
IEC 60793-2-10:2019, Optical fibres – Part 2-10: Product specifications – Sectional
specification for category A1 multimode fibres
IEC 60793-2-20:2015, Optical fibres – Part 2-20: Product specifications – Sectional
specification for category A2 multimode fibres
IEC 60793-2-30:2015, Optical fibres – Part 2-30: Product specifications – Sectional
specification for category A3 multimode fibres
IEC 60793-2-40:2015, Optical fibres – Part 2-40: Product specifications – Sectional
specification for category A4 multimode fibres
IEC 60793-2-50:2018, Optical fibres – Part 2-50: Product specifications – Sectional
specification for class B single-mode fibres
IEC 60793-2-60:2008, Optical fibres – Part 2-60: Product specifications – Sectional
specification for category C single-mode intraconnection fibres
IEC 60793-2-70:2017, Optical fibres – Part 2-70: Product specifications – Sectional
specification for polarization-maintaining fibres
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at http://www.electropedia.org/
3.1
multimode fibre
optical fibre in the core of which the radiation of two or more bound modes can propagate at
the wavelength of interest
[SOURCE: IEC 60050-731:1991, 731-02-03]
3.2
single-mode fibre
optical fibre in which the radiation of only one bound mode can propagate at the wavelength
of interest
[SOURCE: IEC 60050-731:1991, 731-02-02, modified – Note deleted.]

3.3
core
central region of an optical fibre through which most of the optical power is transmitted
[SOURCE: IEC 60050-731:1991, 731-02-04]
3.4
cladding
dielectric material of an optical fibre surrounding the core
[SOURCE: IEC 60050-731:1991, 731-02-05]
3.5
primary coating
thin coating applied directly to the cladding, usually at the time of the fibre drawing, in one or
more layers, to preserve integrity of the cladding surface
Note 1 to entry A secondary coating may be applied directly to the primary coating of one or more fibres, to
reinforce the protection of the optical fibre during handling and cabling.
[SOURCE: IEC 60050-731:1991, 731-02-57, modified – The wording "usually at the time of
the fibre drawing, in one or more layers," and Note 1 have been added.]
3.6
fibre buffer
material or assembly of materials used to protect the optical fibre against physical damage
[SOURCE: IEC 60050-731:1991, 731-02-56]
3.7
coloured coating
thin coating applied on the primary coating or on the secondary coating in order to make each
fibre distinguishable by its colour
3.8
coloured buffer
buffer applied on the primary coating and/or secondary coating in order to make each fibre
distinguishable by its colour
4 Quality assurance
It is the responsibility of the supplier to establish quality assurance by quality control
procedures which ensures that the product meets the requirements of this document and the
related sectional specifications and family specifications. It is not intended that a complete
testing programme be carried out on every length of fibre. When the customer wishes to
specify acceptance tests or other quality procedures, it is essential that an agreement be
reached between the supplier and the customer at the time of ordering.
5 Construction of optical fibres
5.1 Class A – Multimode fibres
The main fibre categories are based on g, the refractive index profile parameter, see Table 2.
The normalized index profile is expressed as:

– 8 – IEC 60793-2:2019 © IEC 2019
g
δx 1−x
( ) (1)
where
nx −n 1
( ) ()
δx = (2)
( )
nn01−
( ) ()
r
0≤≤ra is the normalized radial position; (3)
x= ( )
a
a is the core radius;
n(x) is the refractive index at normalized position x.
Table 2 – Main categories of multimode fibres
Category Material Type Limits
A1 Glass core/glass cladding Graded index fibre 1 ≤ g ˂ 3
A2 Glass core/glass cladding Step and quasi-step index fibre
3 ≤ g ˂ ∞
Step index fibre or
A3 Glass core/plastic cladding 10 ≤ g ˂ ∞
graded index fibre (under 1 ≤ g ≤ 3
consideration)
A4 Plastic core/plastic cladding Step, multi-step, or graded index fibre 1 ≤ g ˂ ∞
NOTE Attention is drawn to the index profile as stated in the detail specification. The fibre category is
determined on the basis of the material type and the g value which best fits the normalized refractive index
profile, falling within the category defined above.

A further differentiation of sub-categories (and models) inside the main categories is given in
Table 3.
Table 3 – Sub-categories of multimode fibres
Category Sub-category Model Nominal Nominal Nominal Nominal
core cladding coating numerical
diameter diameter diameter aperture
(NA )
ff
µm µm µm
A1
A1-OM2 A1-OM2a (traditional 50 125 245 0,20
macrobend loss)
A1-OM2b (enhanced
macrobend loss)
A1-OM3 A1-OM3a (traditional
macrobend loss)
A1-OM3b (enhanced
macrobend loss)
A1-OM4 A1-OM4a (traditional
macrobend loss)
A1-OM4b (enhanced
macrobend loss)
A1-OM5 A1-OM5a (traditional
macrobend loss)
A1-OM5b (enhanced
macrobend loss)
A1-OM1 62,5 125 245 0,275
=
Category Sub-category Model Nominal Nominal Nominal Nominal
core cladding coating numerical
diameter diameter diameter aperture
(NA )
ff
µm µm µm
A1d 100 140 245 0,26 or 0,29
A2
A2a 100 140 NS 0,23 or 0,26
A2b 200 240 NS 0,23 or 0,26
A2c 200 280 NS 0,23 or 0,26
A3
A3a 200 300 900 0,40
A3b 200 380 600 0,40
A3c 200 230 500 0,40
A3d 200 230 500 0,35
A3e 200 230 500 0,37
A3f 50 230 500 0,20
A3g 62,5 230 500 0,275
A4
A4a A4a.1 NS 1 000 NA (A4a.1): 0,50
A4a.2 (A4a.2): 0,485
A4b NS 750 NA 0,50
A4c NS 500 NA 0,50
A4d NS 1 000 NA 0,30
A4e ≥ 500 750 NA 0,25
A4f 200 490 NA 0,19
A4g 120 490 NA 0,19
A4h 62,5 245 NA 0,19
NOTE 1 NA = not applicable; NS = not specified.
NOTE 2 All five A1-OMx sub-categories indicated differ in bandwidth (or DMD) requirements.
NOTE 3 Most A1 sub-categories have been changed in terms of fibre designation, starting from
IEC 60793-2-10:2019 (edition 7). See Table 1 of IEC 60793-2-10:2019 for cross-references to former fibre
designations.
5.2 Class B – Single-mode fibres
The categories of single-mode fibres currently in use are given in Table 4.

– 10 – IEC 60793-2:2019 © IEC 2019
Table 4 – Categories of glass core/glass clad single-mode fibres
Category Type Description
B-652 Dispersion Dispersion unshifted single-mode fibre.
unshifted
Two sub-categories are recognized:
B-652.B is optimised for use in the 1 310 nm region but can be used in
the 1 550 nm and 1 625 nm regions. Depending on link length and bit
rates, dispersion may need accommodation in the 1 550 nm region.
B-652.D can be used over the extended wavelength range from 1 260 nm
up to 1 625 nm. Chromatic dispersion in this band may impose
requirements either on the maximum link length or the need for
accommodation.
B-653 Dispersion This dispersion-shifted single-mode fibre is optimised for single-channel
shifted transmission in the 1 550 nm region. Multiple channels can only be
transmitted if care is taken to avoid the effects of four-wave mixing by, for
example, moderating the power levels or appropriate spacing or
placement of the channels.
Two sub-categories are recognized (B-653.A and B-653.B) differing in
chromatic dispersion characteristics.
B-654 Cut-off shifted This category of dispersion unshifted single-mode fibre is optimised for
low loss in the 1 550 nm region.
Five sub-categories are recognized (B-654.A, B-654.B, B-654.C, B-654.D
and B-654.E) differing in chromatic dispersion and mode field
characteristics.
B-655 Non-zero This dispersion-shifted single-mode fibre is optimised for multiple channel
dispersion-shifted transmission in the 1 550 nm region. The dispersion coefficient is required
to be non-zero throughout the band from 1 530 nm to 1 565 nm, but may
be either positive or negative. Depending on the dispersion
characteristics, multiple channel transmission may be possible at bands
either above or below the normal 1 550 nm region.
Three sub-categories are recognized (B-655.C, B-655.D and B-655.E),
differing in chromatic dispersion characteristics.
B-656 Wideband non- This wideband non-zero dispersion-shifted single-mode fibre is optimised
zero dispersion- for multiple channel transmission in the wavelength range of 1 460 nm to
shifted 1 625 nm with the positive value of the chromatic dispersion coefficient
that is greater than some non-zero value. This fibre can be used for both
CWDM and DWDM systems throughout the wavelength region between
1 460 nm and 1 625 nm.
B-657 Bending loss This category of single-mode fibre is optimised for improved bending
insensitive performance.
Four sub-categories are recognized:
B-657.A1 and B-657.A2 fibres are a subset of category B-652.D fibres
and therefore are compliant with B-652.D fibres and have the same
transmission properties. Sub-category B-657.A1 fibres are appropriate for
a minimum bend radius of 10 mm; sub-category B-657.A2 fibres for a
minimum bend radius of 7,5 mm.
B-657.B2 and B-657.B3 fibres are intended to be used for restricted
distances (less than 1 000 m) at the end of access networks, in particular
inside buildings or near buildings (e.g. outside building riser cabling).
Application length of B-657.B fibre, however, depends on the deployment
strategy of each network operator.
Sub-category B-657.B fibres are not necessarily compliant with category
B-652.D fibres in terms of chromatic dispersion coefficient specifications.
These fibres, however, are system compatible with B-657.A (and B-652.D)
fibres in access networks.
Sub-category B-657.B2 fibres are appropriate for a minimum bend radius
of 7,5 mm; sub category B-657.B3 fibres for a minimum bend radius of
5 mm.
NOTE The Class B categories have been changed in fibre designation, starting from IEC 60793-2-50:2018
(edition 6). See Table 1 of IEC 60793-2-50:2018 for cross-references to former fibre designations.

5.3 Class C – Single-mode fibres for intraconnection
The categories of single-mode fibres for intraconnection currently in use are given in Table 5.

Table 5 – Categories of glass core/glass clad single-mode fibres for intraconnection
Category Type Description
C1 Single-mode intraconnection fibre This category of single-mode fibre is optimised for precision
suitable for use with any class B glass geometry and improved macrobending, and generally
single-mode fibre at wavelengths having lower fibre cut-off wavelength compared to that of
from 1 260 nm to B-652.B fibres.
1 625 nm.
C2 Single-mode intraconnection fibre This category of single-mode fibre with reduced mode field
suitable for use from 1 260 nm to diameter is optimised for loss performance in the 1 310 nm
1 360 nm. region.
Single-mode intraconnection fibre This category of single-mode fibre with reduced mode field
C3
suitable for use from 1 530 nm to diameter is optimised for loss performance in the 1 550 nm
1 625 nm. region.
Single-mode intraconnection fibre This single-mode intraconnection fibre is intended to support
C4
suitable for use at 980 nm. 980 nm transmissions.
NOTE All four categories indicated have sub-categories based on 125 µm and 80 µm cladding diameter.

5.4 Class D – Polarization-maintaining fibres
The categories of polarization-maintaining fibres currently in use are given in Table 6.
Table 6 – Categories of glass core/glass clad polarization-maintaining fibres
Category Type Description
D1 Polarization-maintaining fibre This category of polarization-maintaining fibre is
suitable for use at 980 nm optimised for polarization-maintaining ability in the
980 nm region. This fibre is used for erbium-doped
fibre amplifier.
D2 Polarization-maintaining fibre This category of polarization-maintaining fibre is
suitable for use at 1 310 nm optimised for polarization-maintaining ability and
connection property of category B fibres in the
1 310 nm region.
D3 Polarization-maintaining fibre This category of polarization-maintaining fibre is
suitable for use at 1 550 nm optimised for polarization-maintaining ability and
connection property of category B fibres in the
1 550 nm region.
6 General requirements
6.1 Coating
Fibres with glass cladding shall be coated with a material suitable for protecting the cladding
material from damage. For fibres with coatings:
a) the coating shall be in close contact with the cladding material to preserve the initial
integrity of the surface;
b) the coating consists of one or more layers of the same or different materials;
c) the coating shall be removable for connecting purposes, except where it is used as a
reference surface. The method of removal shall be agreed between the supplier and the
customer.
6.2 Interface with the coating
The interstices between the coated fibre (when the fibre is coated) and loose buffer can be
filled with a suitable fluid or easily deformable materials.

– 12 – IEC 60793-2:2019 © IEC 2019
6.3 Colours of the coating
When fibre is coloured:
a) colours shall correspond as far as possible with IEC 60304, of which the following are
examples: natural or white, red, yellow, blue, green, etc.;
b) a marking over the colour may be used. If used, the marking shall consist of distinctive
coloured rings, lines, or helices. Printed markings shall adhere satisfactorily. Marking shall
be easily identifiable with a constant repeated distance.

Annex A
(normative)
Existing multimode fibres
Table A.1 lists existing categories of multimode fibres.
Table A.1 – Existing multimode fibres
Class Category Sub-category Model Document
A: Multimode fibres
A1 – Graded index (glass core/glass cladding) IEC 60793-2-10:2019
A1-OM2 A1-OM2a and A1-OM2b Annex A
A1-OM3 A1-OM3a and A1-OM3b
A1-OM4 A1-OM4a and A1-OM4b
A1-OM5 A1-OM5a and A1-OM5b
A1-OM1  Annex B
A1d  Annex C
A2 – Step index (glass core/glass cladding) IEC 60793-2-20:2015
A2a  Annex A
A2b  Annex B
A2c  Annex C
A3 – Step or graded index (glass core/plastic cladding) IEC 60793-2-30:2015
A3a  Annex A
A3b  Annex B
A3c  Annex C
A3d  Annex D
A3e Annex E
A3f Annex F
A3g Annex G
A4 – Step or graded index plastic optical fibre IEC 60793-2-40:2015
A4a  Annex A
A4a.1
A4a.2
A4b  Annex B
A4c  Annex C
A4d  Annex D
A4e  Annex E
A4f  Annex F
A4g  Annex G
A4h  Annex H
– 14 – IEC 60793-2:2019 © IEC 2019
Annex B
(normative)
Existing single-mode fibres
B.1 Existing single-mode fibres
Table B.1 lists existing categories of single-mode fibres.
Table B.1 – Existing single-mode fibres
Class Category Sub-category Model Document
B: Single-mode fibres  IEC 60793-2-50:2019
B-652 – Dispersion unshifted Annex A

B-652.B
B-652.D
B-653 – Dispersion shifted  Annex B
B-653.A
B-653.B
B-654 – Cut-off shifted Annex C
B-654.A
B-654.B
B-654.C
B-654.D
B-654.E
B-655 – Non-zero dispersion shifted Annex D
B-655.C
B-655.D
B-655.E
B-656 – Wideband non-zero dispersion shifted Annex E

B-657 – Bending loss insensitive Annex F

B-657.A
B-657.A1
B-657.A2
B-657.B
B-657.B2
B-657.B3
B.2 Existing fibres for intraconnection
Table B.2 lists existing fibres for intraconnection.
Table B.2 – Existing fibres for intraconnection

Class Category Sub-category Document

C: Single-mode fibres for intraconnection  IEC 60793-2-60:2008
C1 – Suitable for use from 1 280 nm to 1 625 nm Annex A
C1_125
C1_80
C2 – Suitable for use in the 1 310 nm region Annex B
C2_125_a and C2_125_b
C2_80_a and C2_80_b
C3 – Suitable for use in the 1 550 nm region Annex C
C3_125_a and C3_125_b
C3_80_a and C3_80_b
C4 – Suitable for use at 980 nm Annex D
C4_125_a and C4_125_b
C4_80_a and C4_80_b
B.3 Existing polarization-maintaining fibres
Table B.3 lists existing polarization-maintaining fibres.
Table B.3 – Existing polarization-maintaining fibres

Class Category Sub-category Document
D: Polarization-maintaining fibres  IEC 60793-2-70:2017
D1 – Suitable for use at 980 nm Annex A

D2 – Suitable for use at 1 310 nm Annex B

D3 – Suitable for use at 1 550 nm Annex C

– 16 – IEC 60793-2:2019 © IEC 2019
Bibliography
IEC 60050-731:1991, International Electrotechnical Vocabulary – Part 731: Optical fibre
communication (available at http://www.electropedia.org)

_____________
– 18 – IEC 60793-2:2019 © IEC 2019
SOMMAIRE
AVANT-PROPOS . 19
1 Domaine d'application . 21
2 Références normatives . 22
3 Termes et définitions . 23
4 Assurance de la qualité . 24
5 Construction des fibres optiques . 24
5.1 Classe A – Fibres multimodales . 24
5.2 Classe B – Fibres unimodales . 26
5.3 Classe C – Fibres unimodales pour intraconnexion . 28
5.4 Classe D – Fibres à maintien de polarisation . 28
6 Exigences générales . 29
6.1 Revêtement . 29
6.2 Interface avec le revêtement . 29
6.3 Couleurs du revêtement . 29
Annexe A (normative) Fibres multimodales existantes . 30
Annexe B (normative) Fibres unimodales existantes . 31
B.1 Fibres unimodales existantes . 31
B.2 Fibres existantes pour intraconnexion . 31
B.3 Fibres existantes à maintien de polarisation . 32
Bibliographie . 33

Tableau 1 – Spécifications intermédiaires . 22
Tableau 2 – Principales catégories de fibres multimodales . 25
Tableau 3 – Sous-catégories de fibres multimodales . 25
Tableau 4 – Catégories de fibres unimodales à cœur en verre/gaine en verre . 27
Tableau 5 – Catégories de fibres unimodales à cœur en verre/gaine en verre pour
l'intraconnexion . 28
Tableau 6 – Catégories de fibres à maintien de polarisation à cœur en verre/gaine en
verre . 28
Tableau A.1 – Fibres multimodales existantes . 30
Tableau B.1 – Fibres unimodales existantes . 31
Tableau B.2 – Fibres existantes pour intraconnexion . 32
Tableau B.3 – Fibres existantes à maintien de polarisation . 32

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
FIBRES OPTIQUES –
Partie 2: Spécifications de produits –
Généralités
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l’IEC). L’IEC a pour
objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines
de l'électricité et de l'électronique. À cet effet, l’IEC – entre autres activités – publie des Normes
internationales, des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au
public (PAS) et des Guides (ci-après dénommés "Publication(s) de l’IEC"). Leur élaboration est confiée à des
comités d'études, aux travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les
organisations internationales, gouvernementales et non gouvernementales, en liaison avec l’IEC, participent
également aux travaux. L’IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO),
selon des conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l’IEC concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l’IEC
intéressés sont représentés dans chaque comité d’études.
3) Les Publications de l’IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l’IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l’IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l’IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l’IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L’IEC elle-même ne fournit aucune attestation de conformité. L’IEC n'est responsable d'aucun des services
effectués par les organismes de certification indépendants. L’IEC n'est responsable d'aucun des services
effectués par les organismes de certification indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l’IEC, à ses administrateurs, employés, auxiliaires ou
mandataires, y compris ses experts particuliers et les membres de ses comités d'études et des Comités
nationaux de l’IEC, pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre
dommage de quelque nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais
de justice) et les dépenses découlant de la publication ou de l'utilisation de cette Publication de l’IEC ou de
toute autre Publication de l’IEC, ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments de la présente Publication de l’IEC peuvent faire
l’objet de droits de brevet. L’IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits
de brevets et de ne pas avoir signalé leur existence.
La Norme internationale IEC 60793-2 a été établie par le sous-comité 86A: Fibres et câbles,
du comité d'études 86 de l'IEC: Fibres optiques.
Cette neuvième édition annule et remplace la huitième édition parue en 2015. Cette édition
constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition
précédente:
a) introduction des désignations révisées de la plupart des fibres de la sous-catégorie A1 et
de toutes les fibres unimodales de la classe B;
b) ajout du nouveau modèle de fibre (A1-OM5) défini pour la catégorie A1;
c) ajout des fibres de maintien de la polarisation de classe D.

– 20 – IEC 60793-2:2019 © IEC 2019
Le présent document doit être lu conjointement avec les parties de la série IEC 60793-1 qui
traitent des mesures et essais individuels pour les attributs des fibres optiques.
Le texte de cette Norme internationale est issu des documents suivants:
FDIS Rapport de vote
86A/1964/FDIS 86A/1974/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette Norme internationale.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2.
Une liste de toutes les parties de la série IEC 60793, publiées sous le titre général Fibres
optiques, peut être consultée sur le site web de l'IEC.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de
stabilité indiquée sur le site web de l'IEC sous "http://webstore.iec.ch" dans les données
relatives au document recherché. A cette date, le document sera
• recond
...