EN 61755-3-31:2015

SLOVENSKI STANDARD
01-februar-2016
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Fibre optic interconnecting devices and passive components - Fibre optic connector
optical interfaces - Part 3-31: Optical interface, 8 degrees angled PC, Polyphenylene
sulphide rectangular ferrule, single mode fibres (IEC 61755-3-31:2015)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Optische Schnittstellen
für Lichtwellenleiter-Steckverbinder - Teil 3-31: Optische Schnittstelle rechteckige
Polyphenylensulfid-Ferrule 8 Grad abgewinkelt physikalischer Kontakt für
Einmodenfasern (IEC 61755-3-31:2015)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Interfaces optiques
de connecteurs - Partie 3-31: Paramètres de connecteurs pour fibres unimodales à
dispersion non décalée, en contact physique - Férules rectangulaires avec angle en poly
(sulfure de phénylène) (IEC 61755-3-31:2015)
Ta slovenski standard je istoveten z: EN 61755-3-31:2015
ICS:
33.180.20 3RYH]RYDOQHQDSUDYH]D Fibre optic interconnecting
RSWLþQDYODNQD devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 61755-3-31

NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2015
ICS 33.180.20
English Version
Fibre optic interconnecting devices and passive components -
Connector optical interfaces - Part 3-31: Connector parameters
of non-dispersion shifted single mode physically contacting fibres
- Angled polyphenylene sulphide rectangular ferrules
(IEC 61755-3-31:2015)
Dispositifs d'interconnexion et composants passifs à fibres Lichtwellenleiter - Verbindungselemente und passive
optiques - Interfaces optiques de connecteurs - Bauteile - Optische Schnittstellen für Lichtwellenleiter-
Partie 3-31: Paramètres de connecteurs pour fibres Steckverbinder - Teil 3-31: Optische Schnittstelle
unimodales à dispersion non décalée, en contact physique - rechteckige Polyphenylensulfid-Ferrule 8 Grad abgewinkelt
Férules rectangulaires avec angle en poly(sulfure de physikalischer Kontakt für Einmodenfasern
phénylène) (IEC 61755-3-31:2015)
(IEC 61755-3-31:2015)
This European Standard was approved by CENELEC on 2015-07-17. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61755-3-31:2015 E
European foreword
The text of document 86B/3888/FDIS, future edition 1 of IEC 61755-3-31, prepared by SC 86B "Fibre
optic interconnecting devices and passive components" of IEC/TC 86 "Fibre optics" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN 61755-3-31:2015.

The following dates are fixed:
(dop) 2016-04-17
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2018-07-17
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 61755-3-31:2015 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 61753-1 NOTE Harmonized as EN 61753-1.
IEC 61755-2-1 NOTE Harmonized as EN 61755-2-1.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year

IEC 60793-2-50 -  Optical fibres - EN 60793-2-50 -
Part 2-50: Product specifications -
Sectional specification for class B single-
mode fibres
IEC 61300-3-30 -  Fibre optic interconnecting devices and EN 61300-3-30 -
passive components - Basic test and
measurement procedures -
Part 3-30: Examinations and
measurements - Polish angle and fibre
position on single ferrule multifibre
connectors
IEC 61300-3-52 -  Fibre optic interconnecting devices and EN 61300-3-52 -
passive components - Basic test and
measurement procedures -
Part 3-52: Examinations and
measurements - Guide hole and alignment
pin deformation constant, CD for 8 degree
angled PC rectangular ferrule, single mode
fibres
IEC 61754 Series Fibre optic interconnecting devices and EN 61754 Series
passive components - Fibre optic
connector interfaces
IEC 61754-5 2005 Fibre optic connector interfaces - EN 61754-5 2005
Part 5: Type MT connector family
IEC 61754-7 2008 Fibre optic interconnecting devices and EN 61754-7 2008
passive components - Fibre optic
connector interfaces -
Part 7: Type MPO connector family
IEC 61754-7-1 2014 Fibre optic interconnecting devices and EN 61754-7-1 2014
passive components - Fibre optic
connector interfaces -
Part 7-1: Type MPO connector family -
One fibre row
IEC 61754-10 2005 Fibre optic connector interfaces - EN 61754-10 2005
Part 10: Type Mini-MPO connector family
IEC 61754-18 2001 Fibre optic connector interfaces - EN 61754-18 2002
Part 18: Type MT-RJ connector family + corr. April 2002
IEC 61755-1 -  Fibre optic connector optical interfaces - EN 61755-1 -
Part 1: Optical interfaces for single mode
non-dispersion shifted fibres - General and
guidance
IEC 61755-3-31 ®
Edition 1.0 2015-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Connector

optical interfaces –
Part 3-31: Connector parameters of non-dispersion shifted single mode

physically contacting fibres – Angled polyphenylene sulphide rectangular

ferrules
Dispositifs d’interconnexion et composants passifs à fibres optiques –

Interfaces optiques de connecteurs –

Partie 3-31: Paramètres de connecteurs pour fibres unimodales à dispersion

non décalée, en contact physique – Férules rectangulaires avec angle en

poly(sulfure de phénylène)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-2712-1

– 2 – IEC 61755-3-31:2015  IEC 2015
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Description . 6
4 Interface parameters . 6
Annex A (informative) Theoretical worst-case connector attenuation yield percentage . 16
Annex B (normative) Minus coplanarity . 19
Annex C (informative) Minimum normal force required to achieve physical contact . 20
Bibliography . 25

Figure 1 – Fibre numbering conventions . 7
Figure 2 – Interface dimensions related to lateral and angular offset . 8
Figure 3 – Alignment pin geometry . 8
Figure 4 – Interface dimensions related to longitudinal offset . 9
Figure A.1 – Monte Carlo simulation of Grade B performance for 12-fibre connectors . 16
Figure B.1 – Illustration of fibre line and minus coplanarity parameters . 19
Figure C.1 – Geometry limit, GL, needed to mate 12 fibres, as a function of absolute X-
angle, SX for different magnitudes of minus coplanarity and flat fibre tips. 21
Figure C.2 – Geometry limit, GL, needed to mate 12 fibres, as a function of absolute
X-angle, SX for different magnitudes of minus coplanarity and 1 mm fibre tips. . 21

Table 1 – Optical interface variant information . 7
Table 2 – Optical interface dimensions related to lateral and angular offset for optical
interface variant 1002 . 10
Table 3 – Optical interface dimensions related to lateral and angular offset for optical
interface variants 1104, 1108, 1112 . 11
Table 4 – Optical interface end face geometry dimensions related to physical contact
for optical interface variant 1002 . 12
Table 5 – Optical interface end face geometry dimensions related to physical contact
for optical interface variant 1104 . 13
Table 6 – Optical interface end face geometry dimensions related to physical contact
for optical interface variant 1108 . 14
Table 7 – Optical interface end face geometry dimensions related to physical contact
for optical interface variant 1112 . 15
Table A.1 – Grade B single channel vs. multi-fibre connector performance . 17
Table A.2 – Grade C single channel vs. multi-fibre connector performance . 17
Table A.3 – Grade D single channel vs. multi-fibre connector performance . 17
Table C.1 – Parameter constants for 4-fibre optical interface variant 1104 . 23
Table C.2 – Parameter constants for 8-fibre optical interface variant 1108 . 24
Table C.3 – Parameter constants for 12-fibre optical interface variant 1112 . 24

IEC 61755-3-31:2015  IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
CONNECTOR OPTICAL INTERFACES –

Part 3-31: Connector parameters of non-dispersion
shifted single mode physically contacting fibres –
Angled polyphenylene sulphide rectangular ferrules

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 prep
...