EN IEC 61300-3-50:2026

SLOVENSKI STANDARD
01-april-2026
Nadomešča:
SIST EN 61300-3-50:2013
SIST EN 61300-3-50:2013/AC:2015
Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni
postopki - 3-50. del: Preiskave in meritve - Presluh pri optičnih prostorskih stikalih
(IEC 61300-3-50:2025)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-50: Examinations and measurements - Crosstalk for
optical spatial switches (IEC 61300-3-50:2025)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 3-50: Untersuchungen und Messungen - Übersprechen bei
räumlichen optischen Schaltern (IEC 61300-3-50:2025)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Procédures
fondamentales d'essais et de mesures - Partie 3-50: Examens et mesures - Diaphonie
relative aux commutateurs spatiaux optiques (IEC 61300-3-50:2025)
Ta slovenski standard je istoveten z: EN IEC 61300-3-50:2026
ICS:
33.180.20 Povezovalne naprave za Fibre optic interconnecting
optična vlakna devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61300-3-50

NORME EUROPÉENNE
EUROPÄISCHE NORM February 2026
ICS 33.180.20 Supersedes EN 61300-3-50:2013; EN 61300-3-
50:2013/AC:2015; EN 61300-3-50:2013/AC:2015-09
English Version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures - Part 3-50:
Examinations and measurements - Crosstalk for optical spatial
switches
(IEC 61300-3-50:2025)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Procédures fondamentales d'essai et de Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-
mesure - Partie 3-50: Examens et mesurages - Diaphonie 50: Untersuchungen und Messungen - Übersprechen bei
relative aux commutateurs spatiaux optiques räumlichen optischen Schaltern
(IEC 61300-3-50:2025) (IEC 61300-3-50:2025)
This European Standard was approved by CENELEC on 2026-01-19. 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
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61300-3-50:2026 E

European foreword
The text of document 86B/5129/FDIS, future edition 2 of IEC 61300-3-50, 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 61300-3-50:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-02-28
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2027-02-28
document have to be withdrawn
This document supersedes EN 61300-3-50:2013 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 61300-3-50:2025 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 standard indicated:
IEC 62074-1 NOTE Approved as EN IEC 62074-1
IEC 61300-3-29 NOTE Approved as EN 61300-3-29
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.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60876-1 - Fibre optic interconnecting devices and EN 60876-1 -
passive components - Fibre optic spatial
switches - Part 1: Generic specification
IEC 61300-1 - Fibre optic interconnecting devices and EN IEC 61300-1 -
passive components - Basic test and
measurement procedures - Part 1: General
and guidance
IEC 61300-3-2 - Fibre optic interconnecting devices and EN 61300-3-2 -
passive components - Basic test and
measurement procedures - Part 3-2:
Examination and measurements -
Polarization dependent loss in a single-
mode fibre optic device
IEC/TS 62627-09 - Fibre optic interconnecting devices and - -
passive components - Vocabulary for
passive optical devices
IEC 61300-3-50 ®
Edition 2.0 2025-12
INTERNATIONAL
STANDARD
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures -
Part 3-50: Examinations and measurements - Crosstalk for optical spatial
switches
ICS 33.180.20  ISBN 978-2-8327-0906-1

IEC 61300-3-50:2025-12(en)
IEC 61300-3-50:2025 © IEC 2025
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms, definitions and abbreviated terms . 4
3.1 Terms and definitions. 4
3.2 Abbreviated terms . 4
4 General description . 5
5 Apparatus . 6
5.1 Light source S . 6
5.2 Temporary joint TJ . 6
5.3 Terminations T . 6
5.4 Detector D . 7
6 Measurement procedure . 7
6.1 General . 7
6.2 Test set-up . 7
6.3 Measurement of P . 7
6.4 Measurement of P . 7
6.5 Measurement of P (i = 3 to N) . 8
i
6.6 Measurement for other input ports . 8
7 Calculation . 8
7.1 Calculation of crosstalk for specified port pairs . 8
7.2 Calculation of total crosstalk for a specified output port . 9
7.3 Crosstalk of M × N fibre optic switch . 10
7.4 Total crosstalk of M × N fibre optic switch . 10
8 Details to be specified and reported . 10
Bibliography . 11

Figure 1 – Crosstalk for N × 1 optical switch . 5
Figure 2 – Measurement set-up of crosstalk for 1 × N optical switch . 5
Figure 3 – Measurement setup of P . 7
Figure 4 – Measurement setup of P . 8
IEC 61300-3-50:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures -
Part 3-50: Examinations and measurements -
Crosstalk for optical spatial switches

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
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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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) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 61300-3-50 has been prepared by subcommittee 86B: Fibre optic interconnecting devices
and passive components, of IEC technical committee 86: Fibre optics. It is an International
Standard.
This second edition cancels and replaces the first edition published in 2013. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) revising structure of the document.
IEC 61300-3-50:2025 © IEC 2025
The text of this International Standard is based on the following documents:
Draft Report on voting
86B/5129/FDIS 86B/5166/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 61300 series, published under the general title, Fibre optic
inte
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