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PD IEC/TR 62627-05:2013 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, 2013
- 30292146-VOR.pdf [Go to Page]
- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Abbreviations
- 4 Experimental methodology
- 5 The impact of scratches on A and RL of single-mode connectors
- 6 Effects of scratches on RL of MM connectors
- 7 Investigation of impact of contamination on optical performance of 2,5 mm and 1,25 mm connectors [Go to Page]
- 7.1 General
- 7.2 Zone definitions
- 7.3 Experimental data for 2,5 mm ferrule connectors
- 7.4 Experimental data for 1,25 mm ferrule connectors (LC, MU)
- 7.5 Image analysis
- 7.6 Gaussian weighted per cent occluded area
- 7.7 Inspection criteria matrix
- 8 Correlation study between contamination and signal degradation in single-mode APC connectors [Go to Page]
- 8.1 General
- 8.2 Experimental data and analysis for SM APC connectors
- 8.3 Inspection criteria matrix
- 9 Development of cleanliness specifications for single-mode, angled physical contact MPO connectors [Go to Page]
- 9.1 General
- 9.2 Core zone analysis
- 9.3 Cladding zone analysis
- 9.4 MT APC scratch analysis
- 10 Conclusion
- Bibliography
- Annex A (informative) The nature of particle redistribution during series of matings/dematings [Go to Page]
- A.1 General
- A.2 Accumulation of particles near the core during repetitive fibre matings and de-matings for 2,5 mm ferrule connectors
- A.3 Redistribution of particles during series of repetitive matings/de-matings for MPO connectors
- A.4 Attenuation changes and separation factor
- Figures [Go to Page]
- Figure 1 – Block diagram of design of experiment
- Figure 2 – Connector endface with the scratches outside the MFD area
- Figure 3 – Connector endface with scratches passing through the core
- Figure 4 – Examples of characterized endfaces using confocal microscope [7]
- Figure 5 – RL random mated connectors, λ=1 300 nm [7]
- Figure 6 – Influence of the particle location on performance
- 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
- Figure 9 – LC07 images of the DUT and the T07 reference fibre after contamination and first mating
- 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
- Figure 12 – Labelled detected particles with 5 μm annular rings and fibrescope image for LC07-WD-5M
- Figure 13 – Delta attenuation versus GWPOA
- Figure 14 – Left to right: Group A, Group B and average return loss decrease by group
- Figure 15 – Behaviour of relatively large particles versus small particles
- Figure 16 – Test connector in pristine condition (RL= 67,5 dB)and after scratches applied (RL= 68,5 dB)
- Figure 17 – Impact of contamination in core zone for SM APC MPO connectors
- 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
- Figure 20 – Minimal MT/APC contamination on limit sample #1 with signal degradation
- Figure 21 – Typical lack of impact on signal performance of light scratches on MT/APC connections
- Figure A.1 – Experimental methodology block diagram
- Figure A.2 – Relationship between the particle centre moving speed and the charge
- 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
- Figure A.5 – Measured and calculated delta attenuation as functions of GWPOA
- Tables [Go to Page]
- Table 1 – Summary of the result
- Table 2 – A and RL statistics for representative samples
- Table 3 – Inspection criteria for SMF pigtail and patch cord connectors, RL >45 dB
- Table 4 – Inspection criteria for single-mode APC pigtail and patch cord connectors [Go to Page]
