Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-35: Examinations and measurements - Visual inspection of fibre optic connectors and fibre-stub transceivers

IEC 61300-3-35:2022 is concerned with the observation and classification of debris, scratches and defects. The inspection requirements are based on IEC TR 62627-05. Advice for cleaning of contamination from fibres/ferrule is found in IEC TR 62627-01 and a recommendation is given in Annex D. IEC TR 62572-4 provides the cleaning method for a stub for optical transceivers. Visual inspection is in addition to, and does not replace measurement of performance parameters such as attenuation and return loss, or end face parameters. The dimensions specified are chosen such that they can be easily estimated. Not only the zones A and B on the fibre are inspected for defects and scratches but the whole contact area (where the two fibres/ferrules meet when mated) needs to be inspected for contamination (this is up to 250 µm diameter for cylindrical ferrules and the whole ferrule surface for rectangular ferrules).The objectives of this document are the following: - specify the minimum criteria for a microscope to be compliant to this document; - specify the procedure and criteria for inspecting fibre-optic end faces for cleanliness to determine if the end faces are fit for use. All connector optical interfaces (IEC 61755 series and IEC 63267 series) are based on physical contact between fibre cores; - provide quantitative criteria for the analysis of end face images. This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - adding of a statement that visual inspection is not a substitute for optical qualification such as attenuation and return loss measurement; - adding of some terms and definitions; - adding requirements for SM 35 dB connectors; - adding of a sentence in Clause 5 concerning the susceptibility of the methods to system variability and variability within systems from same supplier; - removal of inspection requirements for zones C and D; - insertion of a generic cleanliness specification for whole rectangular ferrule and 250 µm area around every fibre; - adding a cleaning recommendation for rectangular and cylindrical ferrules; - outer edge of inspection zone B has changed from 115 µm to 110 µm to meet manufacturing tolerances of fixture for microscopes; - change that defects that are partly in core are only to be judged for the part they are in the core. The remainder of the defect is considered to be located in the cladding. - adding a statement that a connector cannot be rejected by just failing visual inspection. Meeting the specified optical performance determines the use of this connector.

Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-35: Untersuchungen und Messungen - Visuelle Inspektion von Lichtwellenleiter-Steckverbindern und Faser-Stub-Transceivern

Dispositifs d’interconnexion et composants passifs fibroniques - Procédures fondamentales d’essais et de mesures - Partie 3-35: Examens et mesures - Examen visuel des connecteurs fibroniques et des émetteurs-récepteurs à embase fibrée

L'IEC 61300-3-35:2022 porte sur l’observation et la classification des débris, des éraflures et des défauts. Les exigences d’examen sont fondées sur l’IEC/TR 62627-05. L’IEC/TR 62627-01 fournit des conseils pour le nettoyage de la contamination des fibres/férules et l’Annexe D donne une recommandation. L’IEC/TR 62572-4 fournit la méthode de nettoyage d’une embase pour émetteurs-récepteurs optiques. L’examen visuel s’ajoute à la mesure des paramètres de performance tels que l’affaiblissement et d’affaiblissement de réflexion, ou les paramètres aux extrémités, et ne les remplace pas. Les dimensions spécifiées ont été choisies de manière à faciliter leur estimation. Non seulement les zones A et B de la fibre sont examinées afin de déterminer l’éventuelle présence de défauts et d’éraflures, mais il est également nécessaire d’examiner la totalité de la surface de contact (l’endroit où les deux fibres/férules se rencontrent une fois accouplées) afin de détecter une éventuelle contamination (c’est-à-dire jusqu’à un diamètre de 250 µm pour les férules cylindriques et la totalité de la surface des férules rectangulaires). Le présent document a pour objectifs de: - spécifier les critères minimaux pour qu’un microscope soit conforme au présent document; - spécifier la procédure et les critères d’examen de la propreté des extrémités des fibres optiques afin de déterminer si ces extrémités sont aptes à l’emploi. Toutes les interfaces optiques des connecteurs (séries IEC 61755 et IEC 63267) reposent sur un contact physique entre les cœurs des fibres; - fournir des critères quantitatifs pour l’analyse des images des extrémités. Cette troisième édition annule et remplace la deuxième édition parue en 2015. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente: - ajout d’une mention stipulant qu’un examen visuel ne remplace pas une qualification optique telle qu’une mesure d’affaiblissement et d’affaiblissement de réflexion; - ajout de plusieurs termes et définitions; - ajout d’exigences concernant les connecteurs SM 35 dB; - ajout d’une phrase à l’Article 5 concernant la susceptibilité des méthodes à la variabilité du système et à la variabilité au sein des systèmes provenant d’un même fournisseur; - suppression des exigences d’examen pour les zones C et D; - insertion d’une spécification générique concernant la propreté de la totalité d’une férule rectangulaire et d’une zone de 250 µm autour de chaque fibre; - ajout d’une recommandation de nettoyage des férules rectangulaires et cylindriques; - changement du bord extérieur de la zone d’examen B de 115 µm à 110 µm pour satisfaire aux tolérances de fabrication des microscopes; - modification concernant les défauts en partie situés dans le cœur à considérer uniquement comme étant dans cette partie. Le reste du défaut est considéré comme étant situé dans la gaine; - ajout d’une mention stipulant qu’un connecteur ne peut pas être rejeté après un simple examen visuel. Si la performance optique spécifiée de ce connecteur est satisfaite, il convient d’utiliser ce dernier.

Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni postopki - 3-35. del: Preiskave in meritve - Vizualno pregledovanje optičnih konektorjev in sprejemnikov-oddajnikov z vlakenskimi tulkami (IEC 61300-3-35:2022)

Ta del standarda IEC 61300 obravnava opazovanje in razvrščanje umazanije, prask in napak. Zahteve glede pregledov temeljijo na standardu IEC TR 62627-05. V standardu IEC TR 62627-01 je podan nasvet za čiščenje onesnaženih vlaken/tulk, v dodatku D pa je podano priporočilo. Standard IEC TR 62572-4 podaja metodo čiščenja tulk za optične sprejemnike-oddajnike. Vizualni pregled je dodatek in ne nadomešča merjenja parametrov zmogljivosti, kot sta slabljenje in povratna izguba, ali parametrov končne površine. Navedene mere so izbrane tako, da jih je mogoče enostavno oceniti. Poleg pregledovanja morebitnih napak in prask v območjih A in B na vlaknu je treba pregledati tudi celotno kontaktno območje (kjer se dve vlakni/tulki pri spajanju stikata) ter se tako prepričati, da ni onesnaženo (tj. do premera 250 µm pri cilindričnih tulkah in celotno površino tulke pri pravokotnih tulkah).
Cilji tega dokumenta so:
• določitev minimalnih meril za skladnost mikroskopa s tem dokumentom;
• določitev postopka in meril za pregledovanje čistosti končnih površin optičnih vlaken, da se ugotovi njihova primernost za uporabo. Vsi vmesniki optičnih konektorjev (skupini standardov IEC 61755 in IEC 63267) temeljijo na fizičnem stiku med vlakenskimi jedri;
• zagotovitev kvantitativnih meril za analizo slik končnih površin.

General Information

Status
Published
Publication Date
27-Oct-2022
Current Stage
6060 - Document made available - Publishing
Start Date
28-Oct-2022
Completion Date
28-Oct-2022

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SLOVENSKI STANDARD
01-januar-2023
Nadomešča:
SIST EN 61300-3-35:2016
Optični spojni elementi in pasivne komponente - Osnovni preskusni in merilni
postopki - 3-35. del: Preiskave in meritve - Vizualno pregledovanje optičnih
konektorjev in sprejemnikov-oddajnikov z vlakenskimi tulkami (IEC 61300-3-
35:2022)
Fibre optic interconnecting devices and passive components - Basic test and
measurement procedures - Part 3-35: Examinations and measurements - Visual
inspection of fibre optic connectors and fibre-stub transceivers (IEC 61300-3-35:2022)
Lichtwellenleiter - Verbindungselemente und passive Bauteile - Grundlegende Prüf- und
Messverfahren - Teil 3-35: Untersuchungen und Messungen - Visuelle Inspektion von
Lichtwellenleiter-Steckverbindern und Faser Stub-Transceivern (IEC 61300-3-35:2022)
Dispositifs d'interconnexion et composants passifs à fibres optiques - Procédures
fondamentales d'essais et de mesures - Partie 3-35: Examens et mesures - Examen
visuel des connecteurs à fibres optiques et des émetteurs-récepteurs à embase fibrée
(IEC 61300-3-35:2022)
Ta slovenski standard je istoveten z: EN IEC 61300-3-35:2022
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 61300-3-35

NORME EUROPÉENNE
EUROPÄISCHE NORM October 2022
ICS 33.180.20 Supersedes EN 61300-3-35:2015
English Version
Fibre optic interconnecting devices and passive components -
Basic test and measurement procedures - Part 3-35:
Examinations and measurements - Visual inspection of fibre
optic connectors and fibre-stub transceivers
(IEC 61300-3-35:2022)
Dispositifs d'interconnexion et composants passifs Lichtwellenleiter - Verbindungselemente und passive
fibroniques - Procédures fondamentales d'essais et de Bauteile - Grundlegende Prüf- und Messverfahren - Teil 3-
mesures - Partie 3-35: Examens et mesures - Examen 35: Untersuchungen und Messungen - Visuelle Inspektion
visuel des connecteurs fibroniques et des émetteurs- von Lichtwellenleiter-Steckverbindern und Faser Stub-
récepteurs à embase fibrée Transceivern
(IEC 61300-3-35:2022) (IEC 61300-3-35:2022)
This European Standard was approved by CENELEC on 2022-10-21. 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 61300-3-35:2022 E

European foreword
The text of document 86B/4643/FDIS, future edition 3 of IEC 61300-3-35, 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 61300-3-35:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-07-21
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-10-21
document have to be withdrawn
This document supersedes EN 61300-3-35:2015 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 61300-3-35:2022 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 standard indicated:
IEC 61300-1 NOTE Harmonized as EN IEC 61300-1
IEC 61755-2 (series) NOTE Harmonized as EN 61755-2 (series)
IEC 63267-2 (series) NOTE Harmonized as EN IEC 63267-2 (series)

Under preparation. Stage at the time of publication: prEN IEC 63267-2 (series):2022.
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 60825-2 - Safety of laser products - Part 2: Safety EN 60825-2 -
of optical fibre communication systems
(OFCSs)
IEC 61300-3-35 ®
Edition 3.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Basic test and

measurement procedures –
Part 3-35: Examinations and measurements – Visual inspection of fibre optic

connectors and fibre-stub transceivers

Dispositifs d’interconnexion et composants passifs fibroniques – Procédures

fondamentales d’essais et de mesures –

Partie 3-35: Examens et mesures – Examen visuel des connecteurs fibroniques

et des émetteurs-récepteurs à embase fibrée

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5713-5

– 2 – IEC 61300-3-35:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Apparatus . 7
4.1 General . 7
4.2 Method A: Direct view optical microscopy . 8
4.3 Method B: Video microscopy . 8
4.4 Method C: Automated analysis microscopy . 9
4.5 Requirements of validation . 9
4.6 Minimum requirements for standard field of view microscope . 9
4.7 Minimum requirements for large field of view microscope . 9
5 Inspection procedure . 9
Annex A (normative) Visual requirements for connector end faces . 12
A.1 Requirements . 12
A.2 Visual inspection requirements for multimode PC and APC polished
connectors . 12
A.3 Visual requirements for single-mode PC polished connectors, RL ≥ 26 dB,
and single-mode transceivers using a fibre-stub interface . 13
A.4 Visual requirements for single-mode PC polished connectors, RL ≥ 35 dB . 13
A.5 Visual requirements for single-mode PC polished connectors, RL ≥ 45 dB . 14
A.6 Visual requirements for single-mode angle polished (APC) connectors . 14
Annex B (informative) Examples of defects and scratches . 15
Annex C (normative) Validation procedure . 16
C.1 Validation artefact . 16
C.2 Validation procedure . 16
Annex D (informative) Recommended cleaning method. 17
D.1 Inspection procedure for cleanliness . 17
D.2 Cleaning procedure rectangular ferrules (on cable) . 17
D.3 Cleaning procedure for cylindrical ferrules . 19
D.4 Cleaning procedure for adaptor and receptacle of rectangular ferrules . 20
Annex E (informative) Examples of large field of view images . 21
Bibliography . 23

Figure 1 – Flowchart of inspection procedure . 10
Figure B.1 – Example 1 of defects and scratches . 15
Figure B.2 – Example 2 of defects and scratches . 15
Figure D.1 – Flowchart of dry only cleaning/inspection sequence . 17
Figure D.2 – Flowchart of dry-wet cleaning/inspection sequence . 17
Figure D.3 – Dry cleaning of connector on cable . 18
Figure D.4 – Moisten the tape . 19
Figure D.5 – Wiping action . 19

IEC 61300-3-35:2022 © IEC 2022 – 3 –
Figure D.6 – cleaning of cylindrical ferrule . 19
Figure D.7 – Moisten the tape . 20
Figure D.8 – 2 Strokes on wet tape . 20
Figure D.9 – Insert click cleaner. 20
Figure D.10 – Clean pins . 20
Figure D.11 – Rotate stick . 20
Figure E.1 – Example of typical contaminations . 21
Figure E.2 – Example of typical contaminations . 21
Figure E.3 – Example of typical contaminations . 22
Figure E.4 – Example of typical contaminations . 22

Table A.1 – Visual requirements for multimode PC and APC polished connectors . 12
Table A.2 – Visual requirements for single-mode PC polished connectors, RL ≥ 26 dB,
and single-mode transceivers using a fibre-stub interface . 13
Table A.3 – Visual requirements for single-mode PC polished connectors, RL ≥ 3
...

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