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BS EN IEC 61300-3-35:2022

BS EN IEC 61300-3-35:2022

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Fibre optic interconnecting devices and passive components. Basic test and measurement procedures – Examinations and measurements. Visual inspection of fibre optic connectors and fibre-stub transceivers

Published By Publication Date Number of Pages
BSI 2022 32
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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.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
9 English
CONTENTS
11 FOREWORD
13 1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
14 3.2 Abbreviated terms
4 Apparatus
4.1 General
15 4.2 Method A: Direct view optical microscopy
4.3 Method B: Video microscopy
16 4.4 Method C: Automated analysis microscopy
4.5 Requirements of validation
4.6 Minimum requirements for standard field of view microscope
4.7 Minimum requirements for large field of view microscope
5 Inspection procedure
17 Figures
Figure 1 – Flowchart of inspection procedure
19 Annex A (normative) Visual requirements for connector end faces
A.1 Requirements
A.2 Visual inspection requirements for multimode PC and APC polished connectors
Tables
Table A.1 – Visual requirements for multimode PC and APC polished connectors
20 A.3 Visual requirements for single-mode PC polished connectors, RL ≥ 26 dB, and single-mode transceivers using a fibre-stub interface
A.4 Visual requirements for single-mode PC polished connectors, RL ≥ 35 dB
Table A.2 – Visual requirements for single-mode PC polished connectors,RL ≥ 26 dB, and single-mode transceivers using a fibre-stub interface
Table A.3 – Visual requirements for single-mode PC polished connectors, RL ≥ 35 dB
21 A.5 Visual requirements for single-mode PC polished connectors, RL ≥ 45 dB
A.6 Visual requirements for single-mode angle polished (APC) connectors
Table A.4 – Visual requirements for single-mode PC polished connectors, RL ≥ 45 dB
Table A.5 – Visual requirements for single-mode angle polished (APC) connectors
22 Annex B (informative) Examples of defects and scratches
Figure B.2 – Example 2 of defects and scratches
Figure B.1 – Example 1 of defects and scratches
23 Annex C (normative) Validation procedure
C.1 Validation artefact
C.2 Validation procedure
24 Annex D (informative) Recommended cleaning method
D.1 Inspection procedure for cleanliness
D.2 Cleaning procedure rectangular ferrules (on cable)
Figure D.1 – Flowchart of dry only cleaning/inspection sequence
Figure D.2 – Flowchart of dry-wet cleaning/inspection sequence
25 Figure D.3 – Dry cleaning of connector on cable
26 D.3 Cleaning procedure for cylindrical ferrules
Figure D.4 – Moisten the tape
Figure D.5 – Wiping action
Figure D.6 – cleaning of cylindrical ferrule
27 D.4 Cleaning procedure for adaptor and receptacle of rectangular ferrules
Figure D.7 – Moisten the tape
Figure D.8 – 2 Strokes on wet tape
Figure D.9 – Insert click cleaner
Figure D.10 – Clean pins
Figure D.11 – Rotate stick
28 Annex E (informative) Examples of large field of view images
Figure E.1 – Example of typical contaminations
Figure E.2 – Example of typical contaminations
29 Figure E.3 – Example of typical contaminations
Figure E.4 – Example of typical contaminations
30 Bibliography

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BS EN IEC 61300-3-35:2022
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