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BS EN IEC 61755-3-2:2024

BS EN IEC 61755-3-2:2024

$142.49

Fibre optic interconnecting devices and passive components. Connector optical interfaces – Connector parameters of dispersion unshifted single-mode physically contacting fibres. Angled 2,5 mm and 1,25 mm diameter cylindrical full zirconia ferrules

Published By Publication Date Number of Pages
BSI 2024 28
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IEC 61755-3-2:2024 defines the dimensional limits of the optical interface that are necessary for single-mode fibre optic connectors with 2,5 mm or 1,25 mm diameter cylindrical zirconia (ZrO2) ferrules polished at an 8° angle to meet the specific requirements for fibre-to-fibre interconnection, as defined in IEC 61755-2-2. Ferrules made from the material specified in this standard are suitable for use in all the operating service environments defined in IEC 61753-1. Ferrule dimensions and features are contained in the IEC 61754 series of fibre optic connector interface standards. This second edition cancels and replaces the first edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) normative references have been added; b) The introduction of an additional optical interface with a different fibre core eccentricity profile. The previous revision of optical interface standard is named “Variant 1: with fibre core axis oriented towards the connector guide key”. The additional optical interface is named “Variant 2: with fibre core axis not oriented towards the connector guide key”; c) statements added related to interoperability, where both variants remain intermateable within a given performance grade and are fully backwards compatible to IEC 61755-3-2:2006; d) The addition of Grade B and Grade C interface requirements for both variants; f) The addition of a descriptive statistic for the mean fibre core eccentricity (mean value) to describe the distribution of fibre core eccentricity to ensure interoperability; g) A new informative Annex B to give guidance on the expected attenuation when mated to a reference connector plug; h) A new informative Annex D to give guidance related to estimation of mean fibre eccentricity limits for finite production batch sizes.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
5 Annex ZA (normative) Normative references to international publications with their corresponding European publications
6 English
CONTENTS
7 FOREWORD
10 1 Scope
2 Normative references
11 4 Description
5 Interface parameters
12 Figures
Figure 1 – Connector plug endface dimensions
Figure 2 – Geometric requirements for fibre core location after termination
13 Tables
Table 1 – Optical interface parameter values for 2,5 mm diameter ferrule
14 Table 2 – Optical interface parameter values for 1,25 mm diameter ferrule
15 Figure 3 – Ferrule dimensions
Table 3 – Optical interface parameter values for APC ferrules
16 Annex A (informative)Maximum allowed spherical fibre undercut
17 Figure A.1 – Allowable undercut as a function of endface radius and apex offset –4,9 N minimum contact force
Figure A.2 – Allowable undercut as a function of endface radius and apex offset –2,9 N minimum contact force
18 Annex B (informative)Expected attenuation when mated to reference connector plugs
Table B.1 – Descriptive statistics when performance grades are mated against a Grade R1 reference interface
19 Annex C (informative)Guidance related to simulation of optical interface attenuation
20 Figure C.1 – MFD distribution used in the design curve calculation
Table C.1 – MFD and fibre core nominal index of refraction
21 Figure C.2 – Resultant fibre core to ferrule eccentricitydistribution for Grade B attenuation
Figure C.3 – Resultant fibre angle distribution for Grade B attenuation
22 Figure C.4 – Scatterplot of fibre core eccentricities for oriented Grade B interfaces
23 Figure C.5 – Histogram indicating attenuation distributionof a Grade B optical interface
24 Annex D (informative)Estimation of average fibre core eccentricity limitsas a function of batch size
Figure D.1 – Example histogram showing fibre core eccentricitymean distribution for Grade B interfaces with a batch size of 25
25 Table D.1 – Maximum allowable average fibre core eccentricity limit for different batch sizes
26 Figure D.2 – Illustrative run chart of fibre core eccentricity for different batch sizes which all conform to the mean and maximum limits
27 Bibliography

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BS EN IEC 61755-3-2:2024
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