IEC 61755-6-2:2018

Fibre optic interconnecting devices and passive components - Connector optical interfaces - Part 6-2: Connection of 50 μm core diameter multimode physically contacting fibres - Non-angled for reference connector application, at wavelength of 850 nm using selected A1a fibre only

IEC 61755-6-2: 2018 defines the dimensional limits of an optical interface for reference connectors necessary to meet specific requirements for fibre-to-fibre interconnection of non-angled polished multimode reference connectors with cylindrical ferrules intended to be used for attenuation measurements in the field or factory. One grade of reference connector is defined in this document. The reference connector is terminated to selected IEC 60793-2-10:2015 A1a fibre. The geometrical dimensions and tolerances of the specified reference connector have been developed primarily to limit the variation in measured attenuation between multiple sets of two reference connectors, and therefore to limit the variation in measured attenuation between randomly chosen reference connectors when mated with connectors in the field or factory.
Keywords: optical interface, fibre-to-fibre interconnection

Dispositifs d'interconnexion et composants passifs fibroniques - Interfaces optiques de connecteurs - Partie 6-2: Connexion de fibres multimodales en contact physique d’un diamètre de coeur de 50 μm – Connecteurs de référence sans angle, à une longueur d’onde de 850 nm et en utilisant uniquement les fibres A1a choisies

IEC 61755-6-2: 2018 définit les limites dimensionnelles d’une interface optique pour les connecteurs de référence, qui sont nécessaires pour satisfaire aux exigences particulières des interconnexions fibre à fibre des connecteurs de référence multimodaux polis sans angle à férule cylindrique, destinés à être utilisés pour les mesures d’affaiblissement sur le terrain ou en usine. Le présent document définit une classe de connecteur de référence. Le connecteur de référence est raccordé à des fibres A1a choisies conformément à l’IEC 60793-2-10:2015. Les dimensions géométriques et les tolérances du connecteur de référence spécifié ont été développées principalement pour limiter les écarts au niveau de l’affaiblissement mesuré entre les différentes paires de connecteurs de référence, et donc pour limiter les écarts au niveau de l’affaiblissement mesuré entre des connecteurs de référence choisis de manière aléatoire, lorsqu’ils sont accouplés à des connecteurs sur le terrain ou en usine.
Mots clés : interface optique, interconnexions fibre à fibre

General Information

• Status: Published
• Publication Date: 20-Jun-2018
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.180.20 - Fibre optic interconnecting devices
• Technical Committee: SC 86B - Fibre optic interconnecting devices and passive components
• Current Stage: PPUB - Publication issued
• Start Date: 08-Jun-2018
• Completion Date: 21-Jun-2018

Standards Content (Sample)

IEC 61755-6-2 ®
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Connector
optical interfaces –
Part 6-2: Connection of 50 μm core diameter multimode physically contacting
fibres – Non-angled for reference connector application, at wavelength of
850 nm using selected A1a fibre only

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces
optiques de connecteurs –
Partie 6-2: Connexion de fibres multimodales en contact physique d’un diamètre
de cœur de 50 μm – Connecteurs de référence sans angle, à une longueur
d’onde de 850 nm et en utilisant uniquement les fibres A1a choisies

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IEC 61755-6-2 ®
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Fibre optic interconnecting devices and passive components – Connector

optical interfaces –
Part 6-2: Connection of 50 μm core diameter multimode physically contacting

fibres – Non-angled for reference connector application, at wavelength of

850 nm using selected A1a fibre only

Dispositifs d’interconnexion et composants passifs fibroniques – Interfaces

optiques de connecteurs –
Partie 6-2: Connexion de fibres multimodales en contact physique d’un diamètre

de cœur de 50 μm – Connecteurs de référence sans angle, à une longueur

d’onde de 850 nm et en utilisant uniquement les fibres A1a choisies

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.20 ISBN 978-2-8322-5718-0

– 2 – IEC 61755-6-2:2018 © IEC 2018
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Performance grade . 6
5 Description . 6
6 Criteria for a fit within the performance grade . 7
7 Use of selected fibre in reference-grade connectors . 8
8 Calculated attenuation of random mated grade 1 reference connectors . 8
9 Reference adapter . 9
10 Attenuation measurement uncertainty contribution . 9
Annex A (informative) Multimode attenuation measurement uncertainty contribution . 10
A.1 General . 10
A.2 Sources of variability. 10
A.2.1 Measurement condition and setup . 10
A.2.2 Geometry mismatch . 10
A.3 Overall uncertainty . 11
Bibliography . 12

Figure 1 – Geometrical requirements for fibre core location after termination relative to
the ferrule axis and the connector plug key . 8
Figure 2 – Calculated attenuation of random mated grade 1 reference connectors . 9
Figure A.1 – Attenuation measurement uncertainty contribution for grade 1 reference
connectors resulting from lateral offset, NA and CD mismatch . 10

Table 1 – Multimode attenuation grade at 850 nm . 6
Table 2 – Optical interface parameter values for 1,25 mm and 2,5 mm diameter PC
ferrules for MM reference connectors . 8
Table A.1 – Evaluation of the uncertainty contribution due to measurement conditions . 11

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING
DEVICES AND PASSIVE COMPONENTS –
CONNECTOR OPTICAL INTERFACES –

Part 6-2: Connection of 50 μm core
diameter multimode physically contacting fibres –
Non-angled for reference connector application,
at wavelength of 850 nm using selected A1a fibre only

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International Standard IEC 61755-6-2 has been prepared by subcommittee 86B: Fibre optic
interconnecting devices and passive components, of IEC technical committee 86: Fibre optics.

– 4 – IEC 61755-6-2:2018 © IEC 2018
The text of this International Standard is based on the following documents:
FDIS Report on voting
86B/4124/FDIS 86B/4128/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voti
...