SIST EN IEC 61755-2-1:2022

Fibre optic interconnecting devices and passive components - Connector optical interfaces for single-mode fibres - Part 2-1: Connection parameters of dispersion unshifted physically contacting fibres - Non-angled (IEC 61755-2-1:2022)

This part of IEC 61755 defines a set of prescribed conditions for a single-mode fibre optic
connection that is maintained in order to satisfy the requirements of attenuation and return loss
(RL) performance in a randomly mated pair of non-angled polished physically contacting (PC)
fibres. The model uses a Gaussian distribution of light intensity over the specified mode field
diameter (MFD) for determination of attenuation performance grades, based on MFD mismatch
and the amount of lateral and angular fibre core offsets. Attenuation and RL performance grades
are defined in IEC 61755-1.

Lichtwellenleiter-Verbindungselemente und passive Bauteile - Optische Schnittstellen für Lichtwellenleiter-Steckverbinder für Einmodenfasern - Teil 2-1: Verbindungsparameter von nicht dispersionsverschobenen Fasern mit physikalischem Kontakt - nicht angeschrägt (IEC 61755-2-1:2022)

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces optiques des connecteurs pour fibres unimodales - Partie 2-1: Paramètres de connexion des fibres en contact physique à dispersion non décalée - Sans angle (IEC 61755-2-1:2022)

IEC 61755-2-1:2022 définit un ensemble de conditions prescrites pour maintenir une connexion optique de fibres unimodales permettant de satisfaire aux exigences de performance d’affaiblissement et d’affaiblissement de réflexion (RL) dans une paire de fibres polies en contact physique (PC) sans angle, accouplées sans choix préalable. Le modèle utilise une distribution gaussienne de l’intensité lumineuse sur le diamètre de champ de mode (MFD) spécifié, afin de déterminer les classes de performance d’affaiblissement sur la base de la discordance MFD et de la quantité de décalages latéraux et angulaires des cœurs de fibre. Les classes de performance d’affaiblissement et de RL sont définies dans l’IEC 61755-1. Cette deuxième édition annule et remplace la première édition parue en 2006. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout de références normatives et de tableaux d’exigences visuelles;

b) réexamen de l’ensemble des parties du texte pour prévenir toute mauvaise utilisation de la norme.

Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za enorodovna vlakna - 2-1. del: Parametri konektorjev za disperzijsko nespremenjena, fizično staknjena optična vlakna - Nepoševno (IEC 61755-2-1:2022)

Ta del standarda IEC 61755 določa sklop predpisanih pogojev za povezavo z vzdrževanim enorodovnim optičnim vlaknom, da so izpolnjene zahteve glede slabljenja in zmogljivosti povratne izgube (RL) v naključno povezanem paru nepoševnih poliranih fizično staknjenih vlaken (PC). Model uporablja Gaussovo porazdelitev intenzivnosti svetlobe po premeru polja določenega načina (MFD) za določanje stopenj učinkovitosti slabljenja na podlagi neusklajenosti MFD ter količine stranskih in kotnih odmikov jedra vlakna. Slabljenje in razredi učinkovitosti RL so določeni v standardu IEC 61755-1.

General Information

• Status: Published
• Public Enquiry End Date: 24-Feb-2022
• Publication Date: 19-Oct-2022
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: MOC - Mobile Communications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Oct-2022
• Due Date: 18-Dec-2022
• Completion Date: 20-Oct-2022
• Ref Project: EN IEC 61755-2-1:2022 - Fibre optic interconnecting devices and passive components - Connector optical interfaces for single-mode fibres - Part 2-1: Connection parameters of dispersion unshifted physically contacting fibres - Non-angled

Relations

• Revised: SIST EN 61755-2-1:2007 - Fibre optic connector optical interfaces -- Part 2-1: Optical interface standard single mode non-angled physically contacting fibres
• Effective Date: 11-Oct-2016
• Replaces: SIST EN 61755-2-1:2007 - Fibre optic connector optical interfaces -- Part 2-1: Optical interface standard single mode non-angled physically contacting fibres
• Effective Date: 11-Oct-2022
• Revised: SIST EN 61755-2-1:2007 - Fibre optic connector optical interfaces -- Part 2-1: Optical interface standard single mode non-angled physically contacting fibres
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN IEC 61755-2-1:2022
01-november-2022
Nadomešča:
SIST EN 61755-2-1:2007
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za
enorodovna vlakna - 2-1. del: Parametri konektorjev za disperzijsko
nespremenjena, fizično staknjena optična vlakna - Nepoševno (IEC 61755-2-
1:2022)
Fibre optic interconnecting devices and passive components - Connector optical

interfaces for single-mode fibres - Part 2-1: Connection parameters of dispersion

unshifted physically contacting fibres - Non-angled (IEC 61755-2-1:2022)

Lichtwellenleiter-Verbindungselemente und passive Bauteile - Optische Schnittstellen für

Lichtwellenleiter-Steckverbinder für Einmodenfasern - Teil 2-1: Verbindungsparameter

von nicht dispersionsverschobenen Fasern mit physikalischem Kontakt - nicht
angeschrägt (IEC 61755-2-1:2022)

Dispositifs d’interconnexion et composants passifs fibroniques - Interfaces optiques des

connecteurs pour fibres unimodales - Partie 2-1: Paramètres de connexion des fibres en

contact physique à dispersion non décalée - Sans angle (IEC 61755-2-1:2022)
Ta slovenski standard je istoveten z: EN IEC 61755-2-1:2022
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
SIST EN IEC 61755-2-1:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61755-2-1:2022
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SIST EN IEC 61755-2-1:2022
EUROPEAN STANDARD EN IEC 61755-2-1
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 33.180.20 Supersedes EN 61755-2-1:2006
English Version
Fibre optic interconnecting devices and passive components -
Connector optical interfaces for single-mode fibres - Part 2-1:
Connection parameters of dispersion unshifted physically
contacting fibres - Non-angled
(IEC 61755-2-1:2022)

Dispositifs d'interconnexion et composants passifs Lichtwellenleiter-Verbindungselemente und passive

fibroniques - Interfaces optiques des connecteurs pour Bauteile - Optische Schnittstellen für Lichtwellenleiter-

fibres unimodales - Partie 2-1: Paramètres de connexion Steckverbinder für Einmodenfasern - Teil 2-1:

des fibres en contact physique à dispersion non décalée - Verbindungsparameter von nicht dispersionsverschobenen

Sans angle Fasern mit physikalischem Kontakt - nicht angeschrägt
(IEC 61755-2-1:2022) (IEC 61755-2-1:2022)

This European Standard was approved by CENELEC on 2022-10-04. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Türkiye and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61755-2-1:2022 E
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SIST EN IEC 61755-2-1:2022
EN IEC 61755-2-1:2022 (E)
European foreword

The text of document 86B/4629/FDIS, future edition 2 of IEC 61755-2-1, 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 IEC 61755-2-1:2022.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2023-07-04

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-10-04

document have to be withdrawn

This document supersedes EN 61755-2-1:2006 and all of its amendments and corrigenda (if any).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Any feedback and questions on this document should be directed to the users’ national committee. A

complete listing of these bodies can be found on the CENELEC website.
Endorsement notice

The text of the International Standard IEC 61755-2-1:2022 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 61755-2-2 NOTE Harmonized as EN 61755-2-2
IEC 61755-3-1 NOTE Harmonized as EN 61755-3-1
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SIST EN IEC 61755-2-1:2022
EN IEC 61755-2-1:2022 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where 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 - Part 2-50: Product EN IEC 60793-2-50 -
specifications - Sectional specification for
class B single-mode fibres
IEC 61300-3-6 - Fibre optic interconnecting devices and EN 61300-3-6 -
passive components - Basic test and
measurement procedures - Part 3-6:
Examinations and measurements - Return
loss
IEC 61300-3-34 - Fibre optic interconnecting devices and EN 61300-3-34 -
passive components - Basic test and
measurement procedures - Part 3-34:
Examinations and measurements -
Attenuation of random mated connectors
IEC 61300-3-35 - Fibre optic interconnecting devices and EN 61300-3-35 -
passive components - Basic test and
measurement procedures - Part 3-35:
Examinations and measurements - Visual
inspection of fibre optic connectors and
fibre-stub transceivers
IEC 61300-3-45 - Fibre optic interconnecting devices and EN 61300-3-45 -
passive components - Basic test and
measurement procedures - Part 3-45:
Examinations and measurements -
Attenuation of random mated multi-fibre
connectors
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
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SIST EN IEC 61755-2-1:2022
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SIST EN IEC 61755-2-1:2022
IEC 61755-2-1
Edition 2.0 2022-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Connector
optical interfaces for single-mode fibres –
Part 2-1: Connection parameters of dispersion unshifted physically contacting
fibres – Non-angled
Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces
optiques des connecteurs pour fibres unimodales –
Partie 2-1: Paramètres de connexion des fibres en contact physique à dispersion
non décalée – Sans angle
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5630-5

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 7 ----------------------
SIST EN IEC 61755-2-1:2022
– 2 – IEC 61755-2-1:2022  IEC 2022
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms and definitions ...................................................................................................... 5

4 Attenuation and return loss grades .................................................................................. 6

5 Criteria for a fit within attenuation and return loss grades ................................................ 7

5.1 General ................................................................................................................... 7

5.2 Attenuation grades and criteria ............................................................................... 7

5.3 Visual requirements for return loss grades .............................................................. 8

Annex A (informative) Effect of damaged surface layer on non-angled connections ............. 10

Bibliography .......................................................................................................................... 12

Figure 1 – Lateral offset and angular offset versus attenuation, η , for
combined

single‑mode fibre with 8,9 µm MFD at 1 310 nm ..................................................................... 8

Figure A.1 – Model of the connection of convex polished end faces under compressive load 10

Figure A.2 – High index layer refractive index and thickness versus return loss for a

typical dispersion unshifted single-mode fibre ....................................................................... 11

Table 1 – Single-mode random mate attenuation grades ......................................................... 6

Table 2 – Single-mode return loss grades ............................................................................... 6

Table 3 – MFD and fibre core nominal index of refraction ....................................................... 7

Table 4 – Visual requirements for single-mode PC polished fibres with RL grade 2

single-mode (SM) (RL ≥ 45 dB) ............................................................................................... 9

Table 5 – Visual requirements for single-mode PC polished fibres with RL grade 3

single-mode (SM) (RL ≥ 35 dB) ............................................................................................... 9

Table 6 – Visual requirements for single-mode PC polished fibres with RL grade 4

single-mode (SM) (RL ≥ 26 dB) ............................................................................................... 9

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SIST EN IEC 61755-2-1:2022
IEC 61755-2-1:2022  IEC 2022 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES AND
PASSIVE COMPONENTS – CONNECTOR OPTICAL
INTERFACES FOR SINGLE-MODE FIBRES –
Part 2-1: Connection parameters of dispersion
unshifted physically contacting fibres – Non-angled
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

misinterpretation by any end user.

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

assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

services carried out by independent certification bodies.

6) All users should ensure that they have the latest edition of this publication.

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any natu
...

SLOVENSKI STANDARD
oSIST prEN IEC 61755-2-1:2022
01-februar-2022
Optični spojni elementi in pasivne komponente - Vmesniki optičnih konektorjev za
enorodovna vlakna - 2-1. del: Parametri konektorjev za disperzijsko premaknjena,
nepoševno fizično staknjena optična vlakna
Fibre optic interconnecting devices and passive components - Connector optical

interfaces for single-mode fibres - Part 2-1: Connection parameters of non-dispersion

unshifted physically contacting fibres - non-angled
Ta slovenski standard je istoveten z: prEN IEC 61755-2-1:2021
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
oSIST prEN IEC 61755-2-1:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 61755-2-1:2022
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oSIST prEN IEC 61755-2-1:2022
86B/4537/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 61755-2-1 ED2
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2021-12-03 2022-02-25
SUPERSEDES DOCUMENTS:
86B/4326/CD, 86B/4348A/CC
IEC SC 86B : FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS
SECRETARIAT: SECRETARY:
Japan Mr Shigeru Tomita
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:

Fibre optic interconnecting devices and passive components - Connector optical interfaces for

single-mode fibres - Part 2-1: Connection parameters of non-dispersion unshifted physically

contacting fibres - non-angled
PROPOSED STABILITY DATE: 2032
NOTE FROM TC/SC OFFICERS:

Copyright © 2021 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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oSIST prEN IEC 61755-2-1:2022
IEC CDV 61755-2-1/Ed2  IEC:2021 – 2 – 86B/4537/CDV
1 CONTENTS

3 FOREWORD ........................................................................................................................... 3

4 1 Scope .............................................................................................................................. 5

5 2 Normative references ...................................................................................................... 5

6 3 Terms and definitions ...................................................................................................... 6

7 4 Attenuation and return loss grades .................................................................................. 6

8 5 Criteria for a fit within attenuation and return loss grades ................................................ 7

9 5.1 General ................................................................................................................... 7

10 5.2 Attenuation grades and criteria ............................................................................... 7

11 5.3 Visual requirements for return loss grades .............................................................. 8

12 Annex A (informative) Effect of damaged surface layer on non-angled connections ............ 10

13 Bibliography .......................................................................................................................... 12

15 Figure 1 – Lateral offset and angular offset versus attenuation, ηcombined, for single-

16 mode fibre with 8,9 µm MFD at 1 310 nm ................................................................................ 8

17 Figure A.1 – Model of the connection of convex polished end faces under compressive

18 load 10

19 Figure A.2 – High index layer refractive index and thickness versus return loss for a

20 typical dispersion unshifted single-mode fibre ....................................................................... 11

22 Table 1 – Single-mode random mate attenuation grades ......................................................... 6

23 Table 2 – Single-mode return loss grades ............................................................................... 6

24 Table 3 – MFD and fibre core nominal index of refraction ....................................................... 7

25 Table 4 – Visual requirements for single-mode PC polished fibres with RL grade 2 ................. 8

26 Table 5 – Visual requirements for single-mode PC polished fibres with RL grade 3 ................. 9

27 Table 6 – Visual requirements for single-mode PC polished fibres with RL grade 4 ................. 9

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oSIST prEN IEC 61755-2-1:2022
IEC CDV 61755-2-1/Ed2  IEC:2021 – 3 – 86B/4537/CDV
30 INTERNATIONAL ELECTROTECHNICAL COMMISSION
31 ____________
33 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS –
34 CONNECTOR OPTICAL INTERFACES FOR SINGLE-MODE FIBRES –
36 Part 2-1: Connection parameters of dispersion unshifted physically
37 contacting fibres – non-angled
39 FOREWORD

40 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

41 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

42 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

43 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

44 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

45 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

46 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

47 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

48 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

49 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

50 consensus of opinion on the relevant subjects since each technical committee has representation from all

51 interested IEC National Committees.

52 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

53 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

54 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

55 misinterpretation by any end user.

56 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

57 transparently to the maximum extent possible in their national and regional publications. Any divergence between

58 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

59 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

60 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

61 services carried out by independent certification bodies.

62 6) All users should ensure that they have the latest edition of this publication.

63 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

64 members of its technical committees and IEC National Committees for any personal injury, property damage or

65 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

66 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

67 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

68 indispensable for the correct application of this publication.

69 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

70 rights. IEC shall not be held responsible for identifying any or all such patent rights.

71 International Standard IEC 61755-2-1 has been prepared by subcommittee 86B. Fibre optic

72 interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.

73 This second edition cancels and replaces the first edition published in 2006. It constitutes a

74 technical revision. The changes with respect to the previous edition are,
75 – add normative references and visual requirement tables
76 – reconsider the whole parts of the text to avoid misuse of the standard
77 The text of this International Standard is based on the following documents:
FDIS Report on voting
XX/XX/FDIS XX/XX/RVD
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oSIST prEN IEC 61755-2-1:2022
IEC CDV 61755-2-1/Ed2  IEC:2021 – 4 – 86B/4537/CDV

79 Full information on the voting for the approval of this International Standard can be found in the

80 report on voting indicated in the above table.

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

82 The committee has decided that the contents of this document will remain unchanged until the

83 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

84 the specific document. At this date, the document will be
85 • reconfirmed,
86 • withdrawn,
87 • replaced by a revised edition, or
88 • 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.

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oSIST prEN IEC 61755-2-1:2022
IEC CDV 61755-2-1/Ed2  IEC:2021 – 5 – 86B/4537/CDV
91 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS –
92 CONNECTOR OPTICAL INTERFACES FOR SINGLE-MODE FIBRES –
94 Part 2-1: Connection parameters of dispersion unshifted physically contacting
95 fibres – non-angled
98 1 Scope

99 This part of IEC 61755 defines a set of prescribed conditions for a single-mode fibre optic

100 connection that is maintained in order to satisfy the requirements of attenuation and return loss

101 (RL) performance in a randomly mated pair of non-angled polished physically contacting (PC)

102 fibres. The model uses a Gaussian distribution of light in
...