IEC TR 63367:2021

IEC TR 63367 ®
Edition 1.0 2021-11
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components – Summarising
results of round robin on connector end face scratch recognition and
verification by automated microscopes
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IEC TR 63367 ®
Edition 1.0 2021-11
TECHNICAL
REPORT
colour
inside
Fibre optic interconnecting devices and passive components – Summarising

results of round robin on connector end face scratch recognition and

verification by automated microscopes

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.10 ISBN 978-2-8322-1053-5

– 2 – IEC TR 63367:2021 © IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 8
4 Round robin procedure . 8
5 Specimen preparation . 9
5.1 General . 9
5.2 Multimode specimens . 9
5.3 Single-mode specimens . 11
6 Results . 13
6.1 Reported data . 13
6.2 Multimode specimens . 13
Observations of specimen MM20-2 . 14
Observations of specimen MM12 . 15
Observations of MM14-4 . 16
6.3 Single-mode specimens . 16
Observations of specimen SM9 . 17
Observations of specimen SM15-4 . 18
7 Observations and conclusions . 18
7.1 Multimode observations . 18
Remarks . 19
7.2 Single-mode observations . 19
Remarks . 19
7.3 Conclusions . 19
8 Items to be studied . 20
Annex A (informative) Measurement procedure . 21
Annex B (informative) Performance and geometry data of test specimens . 23
Annex C (informative) Reported scratch results for all specimens . 35
Bibliography . 40

Figure 1 – Multimode single-fibre test specimen grouping . 10
Figure 2 – Multimode multi-fibre test specimen grouping . 11
Figure 3 – Single-mode single-fibre test specimen grouping . 12
Figure 4 – Single-mode multi-fibre test specimen grouping . 13
Figure 5 – Image of specimen end face MM20-2 . 14
Figure 6 – Number of out-of-specification scratches reported for multimode multi-fibre
specimen MM20-2, zone A . 14
Figure 7 – Image of specimen end face MM12 . 15
Figure 8 – Number of out-of-specification scratches reported for multimode single-
fibre specimen MM12, zone A . 15
Figure 9 – Image of specimen end face MM14-4 . 16
Figure 10 – Number of out-of-specification scratches reported for multimode multi-
fibre specimen MM14-4, zone A . 16
Figure 11 – Image of specimen end face SM9 . 17

Figure 12 – Number of out-of-specification scratches reported for single-mode single-
fibre specimen SM9, zone A . 17
Figure 13 – Image of specimen end face SM15-4 . 18
Figure 14 – Number of out-of-specification scratches reported for single-mode multi-
fibre specimen SM15-4, zone A . 18
Figure A.1 – Measurement procedure workflow . 22
Figure B.1 – Initial attenuation of multimode single-fibre specimens . 24
Figure B.2 – Initial return loss of multimode single-fibre specimens . 24
Figure B.3 – Multimode multi-fibre test interface identification key . 25
Figure B.4 – Initial attenuation of multimode multi-fibre specimens . 27
Figure B.5 – Initial return loss of multimode multi-fibre specimens . 27
Figure B.6 – Initial attenuation of single-mode single-fibre specimens . 29
Figure B.7 – Initial return loss of single-mode single-fibre specimens . 30
Figure B.8 – Single-mode multi-fibre test interface identification key . 31
Figure B.9 – Initial attenuation of single-mode multi-fibre specimens . 32
Figure B.10 – Initial return loss of single-mode multi-fibre specimens . 33
Figure C.1 – (All specimens) – Number of out-of-specification scratches reported for
multimode single-fibre specimens, zone A . 35
Figure C.2 – (All specimens) – Number of out-of-specification scratches reported for
multimode single-fibre specimens, zone B . 36
Figure C.3 – (All specimens) – Number of out-of-specification scratches reported for

multimode multi-fibre specimens, zone A . 36
Figure C.4 – (All specimens) – Number of out-of-specification scratches reported for
multimode multi-fibre specimens, zone B . 37
Figure C.5 – (All specimens) – Number of out-of-specification scratches reported for
single-mode single-fibre specimens, zone A . 37
Figure C.6 – (All specimens) – Number of out-of-specification scratches reported for

single-mode single-fibre specimens, zone B . 38
Figure C.7 – (All specimens) – Number of out-of-specification scratches reported for
single-mode multi-fibre specimens, zone A . 38
Figure C.8 – (All specimens) – Number of out-of-specification scratches reported for
single-mode multi-fibre specimens, zone B . 39

Table 1 – Multimode test specimen categorisation . 9
Table 2 – Single-mode test specimen categorisation . 12
Table A.1 – Scratch size limits . 21
Table B.1 – Initial optical performance of multimode single-fibre specimens . 23
Table B.2 – End-face geometry of multimode single-fibre specimens . 25
Table B.3 – Attenuation of multimode multi-fibre specimens . 26
Table B.4 – Return loss of multimode multi-fibre specimens . 26
Table B.5 – End-face geometry parameter of multimode multi-fibre specimens . 28
Table B.6 – Fibre height of multimode multi-fibre specimens . 28
Table B.7 – Core dip of multimode multi-fibre specimens . 28
Table B.8 – Initial optical performance of single-mode single-fibre specimens . 29
Table B.9 – End-face geometry of single-mode single-fibre specimens . 30
Table B.10 – Attenuation of single-mode multi-fibre specimens at 1 310 nm wavelength . 31

– 4 – IEC TR 63367:2021 © IEC 2021
Table B.11 – Attenuation of single-mode multi-fibre specimens at 1 550 nm wavelength . 31
Table B.12 – Return Loss of single-mode multi-fibre specimens at 1 310 nm
wavelength . 32
Table B.13 – Return loss of single-mode multi-fibre specimens at 1 550 nm wavelength . 32
Table B.14 – End-face geometry parameter of single-mode multi-fibre specimens . 33
Table B.15 – Fibre height of single-mode multi-fibre specimens . 33
Table B.16 – Fibre tip radii of single-mode multi-fibre specimens . 34

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE
COMPONENTS – SUMMARISING RESULTS OF ROUND ROBIN
ON CONNECTOR END FACE SCRATCH RECOGNITION AND
VERIFICATION BY
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