Fibre optic communication subsystem test procedures - Part 4-3: Installed passive optical networks - Attenuation and optical return loss measurements

IEC 61280-4-3: 2022 describes the measurement of attenuation, optical return loss and optical power in installed passive optical networks (PONs) using single-mode fibre. This document specifies two methods for measuring the attenuation before activation of the PON:  
method A: one-cord method using a light source and a power meter (LSPM);
method B: optical time-domain reflectometer (OTDR) method in upstream direction only, with reduction of uncertainties due to the variation of backscatter coefficient.  In addition, method C, which is described in informative Annex C, provides an estimate of the attenuation after partial activation of the PON by using a U band filtered optical time-domain reflectometer (FOTDR) in an upstream direction. This publication contains an attached file titled "Supplemental Data" in the form of an Excel spread sheet. This file is intended to be used as a complement and does not form an integral part of the standard.

Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 4-3: Installierte passive optische Netze - Messung von Dämpfung und optischer Rückflussdämpfung

Procédures d’essai des sous-systèmes de télécommunications fibroniques - Partie 4-3: Installations de réseau optique passif - Mesures de l’affaiblissement et de l’affaiblissement de réflexion optique

IEC 61280-4-3: 2022 décrit la mesure de l’affaiblissement, de l’affaiblissement de réflexion optique et de la puissance optique dans des installations de réseau optique passif (PON) utilisant de la fibre unimodale. Le présent document spécifie deux méthodes pour mesurer l’affaiblissement avant l’activation du PON:  
méthode A: méthode à cordon unique utilisant une source optique et un mesureur de puissance (LSPM);
méthode B: méthode au réflectomètre optique dans le domaine temporel (OTDR), uniquement dans le sens ascendant, offrant une réduction des incertitudes associées à la variation du coefficient de rétrodiffusion.  En outre, une méthode C, décrite à l’Annexe C informative, donne une estimation de l’affaiblissement après activation partielle du PON, en utilisant un réflectomètre optique dans le domaine temporel à port filtré (FOTDR, Filtered Optical Time-Domain Reflectometer), fonctionnant sur la bande U dans le sens ascendant. Cette publication contient un fichier joint intitulé "Données complémentaires", sous forme de feuille de calcul Excel. Ce fichier est destiné à être utilisé comme complément, et ne fait pas partie intégrante de la norme.

Postopki preskušanja optičnega komunikacijskega podsistema - 4-3. del: Vgrajena pasivna optična omrežja - Meritve slabljenja in optičnih povratnih izgub (IEC 61280-4-3:2022)

Ta del standarda IEC 61280 opisuje meritve slabljenja, optične povratne izgube in optične moči v nameščenih pasivnih optičnih omrežjih (PON) z enorodnimi vlakni. Ta dokument določa dve metodi merjenja slabljenja pred aktiviranjem PON: • metoda A: enorodna metoda z uporabo vira svetlobe in merilnika moči (LSPM); • metoda B: metoda optičnega reflektometra v časovni domeni (OTDR) samo v smeri proti toku, z zmanjšanjem negotovosti zaradi variacije koeficienta povratnega razprševanja. Poleg tega metoda C, ki je opisana v informativnem dodatku C, zagotavlja oceno slabljenja po delni aktivaciji PON z uporabo optičnega reflektometra v časovni domeni (FOTDR) s filtriranim pasom U v smeri proti toku.

General Information

Status
Published
Publication Date
15-Sep-2022
Current Stage
6060 - Document made available - Publishing
Start Date
16-Sep-2022
Due Date
14-Jun-2019
Completion Date
16-Sep-2022

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SLOVENSKI STANDARD
01-november-2022
Postopki preskušanja optičnega komunikacijskega podsistema - 4-3. del: Vgrajena
pasivna optična omrežja - Meritve slabljenja in optičnih povratnih izgub (IEC 61280
-4-3:2022)
Fibre-optic communication subsystem test procedures - Part 4-3: Installed passive
optical networks - Attenuation and optical return loss measurements (IEC 61280-4-
3:2022)
Prüfverfahren für Lichtwellenleiter-Kommunikationsuntersysteme - Teil 4-3: Installierte
passive optische Netze - Messung von Dämpfung und optischer Rückflussdämpfung
(IEC 61280-4-3:2022)
Procédures d’essai des sous-systèmes de télécommunications fibroniques - Partie 4-3:
Installations de réseau optique passif - Mesures de l’affaiblissement et de
l’affaiblissement de réflexion optique (IEC 61280-4-3:2022)
Ta slovenski standard je istoveten z: EN IEC 61280-4-3:2022
ICS:
33.180.01 Sistemi z optičnimi vlakni na Fibre optic systems in
splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61280-4-3

NORME EUROPÉENNE
EUROPÄISCHE NORM September 2022
ICS 33.180.01
English Version
Fibre optic communication subsystem test procedures - Part 4-3:
Installed passive optical networks - Attenuation and optical
return loss measurements
(IEC 61280-4-3:2022)
Procédures d'essai des sous-systèmes de Prüfverfahren für Lichtwellenleiter-
télécommunications fibroniques - Partie 4-3: Installations de Kommunikationsuntersysteme - Teil 4-3: Installierte passive
réseau optique passif - Mesures de l'affaiblissement et de optische Netze - Messung von Dämpfung und optischer
l'affaiblissement de réflexion optique Rückflussdämpfung
(IEC 61280-4-3:2022) (IEC 61280-4-3:2022)
This European Standard was approved by CENELEC on 2022-09-02. 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 61280-4-3:2022 E

European foreword
The text of document 86C/1749A/CDV, future edition 1 of IEC 61280-4-3, prepared by SC 86C "Fibre
optic systems and active devices" of IEC/TC 86 "Fibre optics" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61280-4-3:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-06-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-09-02
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 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 61280-4-3:2022 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 60875-1:2015 NOTE Harmonized as EN 60875-1:2015 (not modified)
IEC 61280-1-1 NOTE Harmonized as EN 61280-1-1
IEC 61746-2 NOTE Harmonized as EN 61746-2
1 2
IEC 61755-3-1 NOTE Harmonized as EN 61755-3-1
3 4
IEC 61755-3-2 NOTE Harmonized as EN 61755-3-2
IEC 62074-1:2014 NOTE Harmonized as EN 62074-1:2014 (not modified)

Under preparation. Stage at the time of publication: IEC 61755-3-1/CD:2022.
Under preparation. Stage at the time of publication: prEN IEC 61755-3-1:2020.
Under preparation. Stage at the time of publication: IEC 61755-3-2/CD:2022.
Under preparation. Stage at the time of publication: prEN IEC 61755-3-2:2020.
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 61280-1-3 - Fibre optic communication subsystem test EN IEC 61280-1-3 -
procedures - Part 1-3: General
communication subsystems -
Measurement of central wavelength,
spectral width and additional spectral
characteristics
IEC 61280-4-2 - Fibre-optic communication subsystem test EN 61280-4-2 -
procedures - Part 4-2: Installed cable plant
- Single-mode attenuation and optical
return loss measurement
IEC/TR 61282-14 2019 Fibre optic communication system design - -
guidelines - Part 14: Determination of the
uncertainties of attenuation measurements
in fibre plants
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 61315 - Calibration of fibre-optic power meters EN IEC 61315 -
IEC 61746-1 2009 Calibration of optical time-domain EN 61746-1 2011
reflectometers (OTDR) - Part 1: OTDR for
single mode fibres
+ AC 2014
IEC 61753-031-2 - Fibre optic interconnecting devices and EN 61753-031-2 -
passive components - Performance
standard - Part 031-2: Non-connectorized
single-mode 1 × N and 2 × N non-
wavelength-selective branching devices for
Category C - Controlled environment
IEC 61753-031-3 - Fibre optic interconnecting devices and EN 61753-031-3 -
passive components - Performance
standard - Part 031-3: Non-connectorized
single-mode 1×N and 2×N non-
wavelength-selective branching devices for
Category U - Uncontrolled environment
IEC 61753-031-6 - Fibre optic interconnecting devices and EN 61753-031-6 -
passive components - Performance
standard - Part 031-6: Non-connectorized
single-mode 1×N and 2×N non-
wavelength-selective branching devices for
Category O - Uncontrolled environment
IEC 61753-1 - Fibre optic interconnecting devices and EN IEC 61753-1 -
passive components - Performance
standard - Part 1: General and guidance
IEC/TR 62627-01 - Fibre optic interconnecting devices and - -
passive components - Part 01: Fibre optic
connector cleaning methods
IEC 61280-4-3 ®
Edition 1.0 2022-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic communication subsystem test procedures –

Part 4-3: Installed passive optical networks – Attenuation and optical return loss

measurements
Procédures d’essai des sous-systèmes de télécommunications fibroniques –

Partie 4-3: Installations de réseau optique passif – Mesures de l’affaiblissement

et de l’affaiblissement de réflexion optique

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.01 ISBN 978-2-8322-4801-0

– 2 – IEC 61280-4-3:2022 © IEC 2022
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, and abbreviated terms . 10
3.1 Terms and definitions . 10
3.2 Abbreviated terms . 12
4 Basic PON architecture . 13
5 Attenuation measurement . 13
5.1 General . 13
5.2 Methods . 14
5.3 Cabling configurations . 14
5.4 RTM for attenuation measurement . 14
6 Apparatus for attenuation measurement . 14
6.1 General . 14
6.2 Light source . 15
6.2.1 Stability . 15
6.2.2 Light source spectral characteristics . 15
6.3 Launch cord . 15
6.4 Receive or tail cord . 15
6.5 Power meter – LSPM method only . 16
6.6 OTDR apparatus . 16
6.6.1 General . 16
6.6.2 OTDR spectral characteristics . 16
6.7 Connector end face cleaning and inspection equipment . 17
7 Overview of uncertainties . 17
7.1 General . 17
7.2 Typical uncertainty values for method A . 17
7.3 Typical uncertainty values for method B . 18
8 Optical return loss measurements. 19
8.1 General . 19
8.2 ORL measurements using CW . 19
8.3 Reflectance measurement using an OTDR . 19
Annex A (normative) LSPM one-cord reference method . 20
A.1 Applicability of test method . 20
A.2 Apparatus . 20
A.3 Procedure . 20
A.4 Calculation . 21
A.5 Components of reported attenuation . 21
Annex B (normative) Optical time-domain reflectometer method .
...

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