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BSI PD IEC/TR 62627-05:2013

BSI PD IEC/TR 62627-05:2013

$167.15

Fibre optic interconnecting devices and passive components – Investigation on impact of contamination and scratches on optical performance of single-mode (SM) and multimode (MM) connectors

Published By Publication Date Number of Pages
BSI 2013 36
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This part of IEC 62627, which is a technical report, summarizes the extensive industry research on development of cleanliness specifications for single-mode (SM) and multimode (MM) connectors.

The summary of the result shows Table 1.

Table 1 – Summary of the result

PDF Catalog

PDF Pages PDF Title
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Abbreviations
Tables
Table 1 – Summary of the result
10 4 Experimental methodology
Figures
Figure 1 – Block diagram of design of experiment
11 5 The impact of scratches on A and RL of single-mode connectors
Figure 2 – Connector endface with the scratches outside the MFD area
12 6 Effects of scratches on RL of MM connectors
Figure 3 – Connector endface with scratches passing through the core
Figure 4 – Examples of characterized endfaces using confocal microscope [7]
13 7 Investigation of impact of contamination on optical performance of 2,5 mm and 1,25 mm connectors
7.1 General
7.2 Zone definitions
Figure 5 – RL random mated connectors, λ=1 300 nm [7]
14 7.3 Experimental data for 2,5 mm ferrule connectors
Figure 6 – Influence of the particle location on performance
15 7.4 Experimental data for 1,25 mm ferrule connectors (LC, MU)
Figure 7 – FC01 images of DUT and reference fibre after contamination and fifth mating
Figure 8 – FC04 images of DUT and reference fibre after contamination and second mating
16 Figure 9 – LC07 images of the DUT and the T07 reference fibre after contamination and first mating
Table 2 – A and RL statistics for representative samples
17 Figure 10 – LC07 images of the DUT and the T07 reference fibre after contamination and third mating
Figure 11 – LC07 images of the DUT (Figure 11a) and the T07 reference fibre (Figure 11b) after contamination and fifth mating
18 7.5 Image analysis
7.6 Gaussian weighted per cent occluded area
Figure 12 – Labelled detected particles with 5 μm annular rings and fibrescope image for LC07-WD-5M
19 7.7 Inspection criteria matrix
Figure 13 – Delta attenuation versus GWPOA
20 8 Correlation study between contamination and signal degradation in single-mode APC connectors
8.1 General
8.2 Experimental data and analysis for SM APC connectors
Figure 14 – Left to right: Group A, Group B and average return loss decrease by group
Table 3 – Inspection criteria for SMF pigtail and patch cord connectors, RL >45 dB
21 Figure 15 – Behaviour of relatively large particles versus small particles
22 8.3 Inspection criteria matrix
Figure 16 – Test connector in pristine condition (RL= 67,5 dB)and after scratches applied (RL= 68,5 dB)
Table 4 – Inspection criteria for single-mode APC pigtail and patch cord connectors
23 9 Development of cleanliness specifications for single-mode, angled physical contact MPO connectors
9.1 General
9.2 Core zone analysis
9.3 Cladding zone analysis
Figure 17 – Impact of contamination in core zone for SM APC MPO connectors
24 Figure 18 – Contamination failures due to loss of physical contact by fibre position for connections of angled MT ferrules
Figure 19 – Endface images of DUT and reference connector showingno impact to signal performance
25 9.4 MT APC scratch analysis
Figure 20 – Minimal MT/APC contamination on limit sample #1 with signal degradation
26 10 Conclusion
Figure 21 – Typical lack of impact on signal performance of light scratches on MT/APC connections
28 Annex A (informative) The nature of particle redistribution during series of matings/dematings
A.1 General
A.2 Accumulation of particles near the core during repetitive fibre matings and de-matings for 2,5 mm ferrule connectors
Figure A.1 – Experimental methodology block diagram
29 Figure A.2 – Relationship between the particle centre moving speed and the charge
30 A.3 Redistribution of particles during series of repetitive matings/de-matings for MPO connectors
Figure A.3 – Particle migration and the A signal degradation of MPO connector (channel 2) after series of matings/de-matings
Figure A.4 – Evolution of particle centre position for channel 1-11of an MPO connector pair
31 A.4 Attenuation changes and separation factor
Figure A.5 – Measured and calculated delta attenuation as functions of GWPOA
32 Bibliography

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BSI PD IEC/TR 62627-05:2013
$167.15