IEC 60793-2-30:2007

Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres

Applies to optical fibre types A3a, A3b, A3c and A3d. It covers requirements common to A3 multimode fibres. It also covers particular requirements for individual fibre types and specific applications. The main changes from the previous edition are: the addition of tensile strength requirement; the removal of water immersion requirement; and the addition of environmental requirements.

Fibres optiques - Partie 2-30: Spécifications de produits - Spécification intermédiaire pour les fibres multimodales de catégorie A3

S'applique aux fibres optiques de type A3a, A3b, A3c et A3d. Elle couvre des prescriptions communes aux fibres multimodales de catégorie A3. Elle couvre aussi des prescriptions particulières applicables à des types particuliers de fibres et à des applications données. Les principaux changements par rapport à l'édition précédente sont: adjonction d'exigences concernant la contrainte à la traction; suppression des exigences concernant l'immersion dans l'eau; et adjonction d'exigences d'environnement.

General Information

• Status: Published
• Publication Date: 08-Aug-2007
• ICS: 33.180.10 - Fibres and cables
• Technical Committee: SC 86A - Fibres and cables
• Current Stage: DELPUB - Deleted Publication
• Start Date: 25-Oct-2012
• Completion Date: 26-Oct-2025

Relations

• Revised: IEC 60793-2-30:2012 - Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres
• Effective Date: 05-Sep-2023
• Revises: IEC 60793-2-30:2002 - Optical fibres - Part 2-30: Product specifications - Sectional specification for category A3 multimode fibres
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60793-2-30
Edition 2.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2-30: Product specifications – Sectional specification for category A3
multimode fibres
Fibres optiques –
Partie 2-30: Spécifications de produits – Spécification intermédiaire pour les
fibres multimodales de catégorie A3

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IEC 60793-2-30
Edition 2.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Optical fibres –
Part 2-30: Product specifications – Sectional specification for category A3
multimode fibres
Fibres optiques –
Partie 2-30: Spécifications de produits – Spécification intermédiaire pour les
fibres multimodales de catégorie A3

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 33.180.10 ISBN 2-8318-9267-8

– 2 – 60793-2-30 © IEC:2007
CONTENTS
FOREWORD.3

1 Scope .5

2 Normative references .5

3 Specifications .6

3.1 General .6

3.2 Dimensional requirements .6

3.3 Mechanical requirements.7
3.4 Transmission requirements .7
3.5 Environmental requirements .8

Annex A (normative) Family specifications for A3a multimode fibres .9
Annex B (normative) Family specifications for A3b multimode fibres .10
Annex C (normative) Family specifications for A3c multimode fibres .11
Annex D (normative) Family specifications for A3d multimode fibres.13

Bibliography.15

Table 1 – Relevant dimensional attributes and measurement methods.6
Table 2 – Dimensional requirements common to category A3 fibres.6
Table 3 – Additional dimensional attributes required in family specifications .7
Table 4 – Relevant mechanical attributes and test methods .7
Table 5 – Mechanical requirements common to category A3 fibres .7
Table 6 – Relevant transmission attributes and measurement methods.7
Table 7 – Additional transmission attributes required in the family specifications .8
Table 8 – Relevant environmental attributes and test methods.8
Table A.1 – Dimensional requirements specific to A3a fibres .9
Table A.2 – Mechanical requirements specific to A3a fibres.9
Table A.3 – Transmission requirements specific to A3a fibres.9
Table B.1 – Dimensional requirements specific to A3b fibres .10
Table B.2– Mechanical requirements specific to A3b fibres.10

Table B.3 –Transmission requirements specific to A3b fibres.10
Table C.1 – Dimensional requirements specific to A3c fibres .11
Table C.2 – Mechanical requirements specific to A3c fibres.11
Table C.3 –Transmission requirements specific to A3c fibres.11
Table C.4.1 – Environmental exposure tests .12
Table C.4.2 – Attributes measured.12
Table D.1 – Dimensional requirements specific to A3d fibres .13
Table D.2 – Mechanical requirements specific to A3d fibres.13
Table D.3 – Transmission requirements specific to A3d fibres .13
Table D.4.1 – Environmental exposure tests .14
Table D.4.2 – Attributes measured.14

60793-2-30 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
OPTICAL FIBRES −
Part 2-30: Product specifications –

Sectional specification for category A3 multimode fibres

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,
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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-
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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 60793-2-30 has been prepared by subcommittee 86A: Fibres and
cables, of IEC technical committee 86: Fibre optics.
This second edition cancels and replaces the first edition, published in 2002. It constitutes a
technical revision.
The main changes from the previous edition are:
– the addition of tensile strength requirement;
– the removal of water immersion requirement;
– the addition of environmental requirements.

– 4 – 60793-2-30 © IEC:2007
The text of this standard is based on the following documents:

CDV Report on voting
86A/1130/CDV 86A/1150/RVC
Full information on the voting for the approval of this standard can be found in the report on

voting indicated in the above table.

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts of 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 publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60793-2-30 © IEC:2007 – 5 –
OPTICAL FIBRES −
Part 2-30: Product specifications –

Sectional specification for category A3 multimode fibres

1 Scope
This part of IEC 60793-2 is applicable to optical fibre types A3a, A3b, A3c, and A3d. These
fibres are used or can be incorporated in information transmission equipment and optical fibre
cables (typically up to 1 km).
Three types of requirements apply to these fibres:
– general requirements, as defined in IEC 60793-2;
– specific requirements common to the category A3 multimodal fibres covered in this
standard and which are given in Clause 3;
– particular requirements applicable to individual fibre types or specific applications (e.g.
automotive or industrial applications), which are defined in the normative family
specification annexes.
2 Normative references
The following referenced documents are indispensable for the application 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 60793-1-20, Optical fibres – Part 1-20: Measurement methods and test procedures –
Fibre geometry
IEC 60793-1-21, Optical fibres – Part 1-21: Measurement methods and test procedures –
Coating geometry
IEC 60793-1-22, Optical fibres – Part 1-22: Measurement methods and test procedures –
Length measurement
IEC 60793-1-30, Optical fibres – Part 1-30: Measurement methods and test procedures –

Fibre proof test
IEC 60793-1-31, Optical fibres – Part 1-31: Measurement methods and test procedures –
Tensile strength
IEC 60793-1-40, Optical fibres – Part 1-40: Measurement methods and test procedures –
Attenuation
IEC 60793-1-41, Optical fibres – Part 1-41: Measurement methods and test procedures –
Bandwidth
IEC 60793-1-46, Optical fibres – Part 1-46: Measurement methods and test procedures –
Monitoring of changes in optical transmittance
IEC 60793-1-50, Optical fibres – Part 1-50: Measurement methods and test procedures –
Damp heat (steady state)
– 6 – 60793-2-30 © IEC:2007
IEC 60793-1-51, Optical fibres – Part 1-51: Measurement methods and test procedures – Dry

heat
IEC 60793-1-52, Optical fibres – Part 1-52: Measurement methods and test procedures –

Change of temperature
IEC 60793-2, Optical fibres − Part 2: Product specifications – General

3 Specifications
3.1 General
The fibre shall consist of a glass core and a plastic cladding in accordance with 4.2 of
IEC 60793-2.
3.2 Dimensional requirements
Relevant dimensional attributes and measurement methods are given in Table 1.
Dimensional requirements common to all fibres in category A3 are indicated in Table 2.
Table 3 lists additional dimensional attributes that shall be specified by each family
specification.
Table 1 – Relevant dimensional attributes and measurement methods
Measurement
Attributes
methods
Cladding diameter IEC 60793-1-20
Core diameter IEC 60793-1-20
Core non-circularity IEC 60793-1-20
Core-cladding concentricity IEC 60793-1-20
error
Coating diameter IEC 60793-1-21
Fibre length IEC 60793-1-22
Table 2 – Dimensional requirements common to category A3 fibres

Attributes Unit Limits
Core diameter μm 200 ± 8
Core non-circularity %
≤6
Core-cladding concentricity % ≤10
error
a
Fibre length km
a
Length requirements vary and should be agreed
between supplier and customer.
.
60793-2-30 © IEC:2007 – 7 –
Table 3 – Additional dimensional attributes required
in family specifications
Attributes
Cladding diameter
Coating diameter
3.3 Mechanical requirements
Relevant mechanical attributes and test methods are given in Table 4.
Requirements common to all fibres in category A3 are indicated in Table 5.
Table 4 – Relevant mechanical attributes and test methods
Attribute Test method
Tensile strength IEC 60793-1-31
(0,5 m sample length)
Strain rate 3 % to 5 % / minute
Proof test IEC 60793-1-30
Table 5 – Mechanical requirements common to category A3 fibres
Attribute Unit Limit
a
Proof stress level % ≥0,5
a
The proof test level shall be equivalent to
a minimum fibre elongation of 0,5 %. For
the relation between different units, see
4.4 of IEC 62048.
3.4 Transmission requirements
Relevant transmission attributes and measurement methods are given in Table 6.
Additional attributes required in the family specification are indicated in Table 7.

Table 6 – Relevant transmission attributes and measurement methods
Attribute Measurement method
a
IEC 60793-1-40
Attenuation coefficient
Optical continuity IEC 60793-1-40 or
IEC 60793-1-46
a
Modal bandwidth IEC 60793-1-41
Theoretical numerical aperture IEC 60793-1-20
Change of optical transmission IEC 60793-1-46
a
When measuring attenuation and modal bandwidth, the
appropriate launching conditions should be applied - as specified
in IEC 60793-1-40 and IEC 60793-1-41. Attenuation and band-
width are not necessarily linear with length.

– 8 – 60793-2-30 © IEC:2007
Table 7 – Additional transmission attributes required

in the family specifications
Attributes
Attenuation coefficient
Modal bandwidth
Theoretical numerical aperture

3.5 Environmental requirements

Relevant environmental attributes and test methods are given in Table 8.

Table 8 – Relevant environmental attributes and test methods
Attributes Test methods
Damp heat tests IEC 60793-1-50
Dry heat tests IEC 60793-1-51
Change of temperature tests IEC 60793-1-52

60793-2-30 © IEC:2007 – 9 –
Annex A
(normative)
Family specifications for A3a multimode fibres

The following clauses and tables contain particular requirements applicable to A3a fibres.

Common requirements, repeated here for ease of reference from the sectional specification,

are noted by an entry in the “Reference” column. Relevant notes from the sectional
SS
specification are not repeated but indicated with a superscript ” ”.

A.1 Dimensional requirements
Table A.1 contains dimensional requirements specific to A3a fibres.
Table A.1 – Dimensional requirements specific to A3a fibres
Attributes Unit Limits Reference
Cladding diameter
μm 300 ± 30
Coating diameter μm 900 ± 50
Core diameter 3.2
μm 200 ± 8
Core non-circularity % ≤6 3.2
Core-cladding concentricity % 3.2
≤10
error
Fibre length km [See 3.2] 3.2
A.2 Mechanical requirements
Table A.2 contains mechanical requirements specific to A3a fibres.
Table A.2 – Mechanical requirements specific to A3a fibres
Attribute Unit Limit Reference

SS
Proof stress level % 3.3
≥0,5
A.3 Transmission requirements
Table A.3 contains transmission requirements specific to A3a fibres.
Table A.3 – Transmission requirements specific to A3a fibres
Attributes Unit Limits Reference
Attenuation coefficient at 850 nm dB/km ≤10
Modal bandwidth at 850 nm
≥5
MHz·km
Theoretical numerical aperture Unitless
0,40 ± 0,04
A.4 Environmental requirements
None.
– 10 – 60793-2-30 © IEC:2007
Annex B
(normative)
Family specifications for A3b multimode fibres

The following clauses and tables contain particular requirements applicable to A3b fibres.

Common requirements, repeated here for ease of reference from the sectional specification,

are noted by an entry in the “Reference” column. Relevant notes from the sectional
SS
specification are not repeated but indicated with a superscript ” ”.

B.1 Dimensional requirements
Table B.1 contains dimensional requirements specific to A3b fibres.
Table B.1 – Dimensional requirements specific to A3b fibres
Attributes Unit Limits Reference
Cladding diameter
μm 380 ± 30
Coating diameter μm 600 ± 50
Core diameter 3.2
μm 200 ± 8
Core non-circularity % 3.2
≤6
Core-cladding concentricity % 3.2
≤10
error
Fibre length km [See 3.2] 3.2
B.2 Mechanical requirements
Table B.2 contains mechanical requirements specific to A3b fibres.
Table B.2 – Mechanical requirements specific to A3b fibres
Attribute Unit Limit Reference

SS
Proof stress level % 3.3
≥0,5
B.3 Transmission requirements
Table B.3 contains transmission requirements specific to A3b fibres.
Table B.3 –Transmission requirements specific to A3b fibres
Attribute Unit Limit Reference
Attenuation coefficient at 850 nm dB/km
≤10
Modal bandwidth at 850 nm
≥5
MHz·km
Theoretical numerical aperture Unitless 0,40 ± 0,04
B.4 Environmental requirements
None
60793-2-30 © IEC:2007 – 11 –
Annex C
(normative)
Family specifications for A3c multimode fibres

The following clauses and tables contain particular requirements applicable to A3c fibres.

Common requirements, repeated here for ease of reference from the sectional specification,

are noted by an entry in the “Reference” column. Relevant notes from the sectional
SS
specification are not repeated but indicated with a superscript “ ”.

C.1 Dimensional requirements
Table C.1 contains dimensional requirements specific to A3c fibres.
Table C.1 – Dimensional requirements specific to A3c fibres
Attributes Unit Limits Reference
Cladding diameter
μm 230 ± 10
Coating diameter μm 500 ± 50
Core diameter 3.2
μm 200 ± 8
Core non-circularity % 3.2
≤6
Core-cladding concentricity % 3.2
≤10
error
Fibre length km [See 3.2] 3.2
C.2 Mechanical requirements
Table C.2 contains mechanical requirements specific to A3c fibres.
Table C.2 – Mechanical requirements specific to A3c fibres
Attribute Unit Limit Reference

SS
Proof stress level % 3.3
≥0,5
C.3 Transmission requirements
Table C.3 contains transmission requirements specific to A3c fibres.
Table C.3 –Transmission requirements specific to A3c fibres
Attributes Unit Limits Reference
Attenuation coefficient at 850 nm dB/km
≤10
Modal bandwidth at 850 nm
≥5
MHz·km
Theoretical numerical aperture Unitless 0,40 ± 0,04

C.4 Environmental requirements
Tables C.4.1 and C.4.2 contain environmental exposure tests and measurement methods
specific to A3c fibres. Test and measurements shall be documented in two forms:

– 12 – 60793-2-30 © IEC:2007
• relevant environmental attributes, test methods and test conditions are given in Table

C.4.1;
• measurements of a particular mechanical and transmission attribute that may change

during exposure to the environmental test are listed in Table C.4.2.

Table C.4.1 – Environmental exposure tests

Test condition Environment Test method Test condition

Damp heat IEC 60793-1-50 +85 °C, 85 % RH,

long term: 125 days;
A
short term: 10 days
Dry heat IEC 60793-1-51 +125 °C,
long term: 125 days;
short term: 10 days
Change of temperature IEC 60793-1-52 T : -40 °C, T :+125 °C
a b
Damp heat IEC 60793-1-50 +75 °C, 85 % RH,
long term: 125 days;
B
short term: 10 days
Dry heat IEC 60793-1-51 +85 °C,
long term: 125 days;
short term: 10 days
Change of temperature IEC 60793-1-52 T : -40 °C, T :+85 °C
a b
Damp heat IEC 60793-1-50 +70 °C, 85 % RH,
30 days
C
Dry heat IEC 60793-1-51 +70 °C,
30 days
Change of temperature IEC 60793-1-52 T : -20 °C, T :+70 °C
a b
Test condition A, B, or C and short term or long term test conditions should be agreed between
supplier and customer. Test conditions A and B are typical conditions for automotive applications.

Table C.4.2 – Attributes measured
Attributes Unit Limits Reference
Change in optical transmission  dB/km
≤ 1,5 Test conditions
at 850 nm A and B
≤ 2 Test condition C
Tensile strength GPa at 15 % and 50 % 15 % - 1,08 3.3

Weibull Probability Levels 50 % - 1,18

These tests are normally conducted periodically as type-tests for a fibre design. Unless
otherwise indicated, the recovery period allowed between the completion of the environmental
exposure and measuring the attributes shall be as stated in the particular environmental test
method.
60793-2-30 © IEC:2007 – 13 –
Annex D
(normative)
Family specifications for A3d multimode fibres

The following clauses and tables contain particular requirements applicable to A3d fibres.

Common requirements, repeated here for ease of reference from the sectional specification,
are noted by an entry in the “Reference” column. Relevant notes from the sectional
SS
specification are not repeated but indicated with a superscript “ ”.

D.1 Dimensional requirements
Table D.1 contains dimensional requirements specific to A3d fibres.
Table D.1 – Dimensional requirements specific to A3d fibres
Attributes Unit Limits Reference
Cladding diameter
μm 230 ± 10
Coating diameter
μm 500 ± 50
Core diameter μm 200 ± 8 3.2
Core non-circularity % 3.2
≤6
Core-cladding concentricity % ≤10 3.2
error
Fibre length km [See 3.2] 3.2
D.2 Mechanical requirements
Table D.2 contains mechanical requirements specific to A3d fibres.
Table D.2 – Mechanical requirements specific to A3d fibres
Attribute Unit Limit Reference

SS
Proof stress level % 3.3
≥0,5
D.3 Transmission requirements
Table D.3 contains transmission requirements specific to A3d fibres.

Table D.3 – Transmission requirements specific to A3d fibres
Attributes Unit Limits Reference
Attenuation coefficient at 850 nm dB/km
≤10
Modal bandwidth at 850 nm MHz over 100 m ≥100
Theoretical numerical aperture Unitless
0,35 ± 0,02
– 14 – 60793-2-30 © IEC:2007
D.4 Environmental requirements

Tables D.4.1 and D.4.2 contain environmental exposure tests and measurement methods

specific to A3d fibres. Test and measurements shall be documented in two forms:

• relevant environmental attributes, test methods and test conditions are given in Table

D.4.1;
• measurements of a particular mechanical and transmission attribute that may change

during exposure to the environmental test are listed in Table D.4.2.

Table D.4.1 – Environmental exposure tests
Test condition Environment Test method Test condition
Damp heat IEC 60793-1-50 +85 °C, 85 % RH,
long term: 125 days;
A
short term: 10 days
Dry heat IEC 60793-1-51 +125 °C,
long term: 125 days;
short term: 10 days
Change of temperature IEC 60793-1-52 T : -40 °C, T :+125 °C
a b
Damp heat IEC 60793-1-50 +75 °C, 85 % RH,
long term: 125 days;
B
short term: 10 days
Dry heat IEC 60793-1-51 +85 °C,
long term: 125 days;
short term: 10 days
Change of temperature IEC 60793-1-52 T : -40 °C, T :+85 °C
a b
Damp heat IEC 60793-1-50 +70 °C, 85 % RH,
30 days
C
Dry heat IEC 60793-1-51 +70 °C,
30 days
Change of t
...