IEC TR 63367-2021 pdf free download – Fibre optic interconnecting devices and passive components – Summarising results of round robin on connector end face scratch recognition and verification by automated microscopes.
This document summarises the results of a round robin on connector end face scratchrecognition and verification by automated microscopes.The prime objectives of the study were:
.determine the amount of variability (repeatability and reproducibility) when different state-
of-the-art inspection systems are assessed against lEC 61300-3-35:2015;
evaluate any system-to-system variation in the quantity of reported scratches;
provide recommendations to improve the repeatability and reproducibility of fibre opticinspection systems.
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4Round robin procedure
The round robin workflow consisted of the following steps.
a) Specimen preparation (see Clause 5): Multimode and single-mode single-fibre and multi-
fibre test specimens were produced.An image of each end face was captured by highresolution microscope, attenuation and return loss were measured for each fibre,and end-face geometry was determined to verify that the specimens met the lEC interfacerequirements.
b)Circulation initiation: Measurement procedure and results template (see Annex A) were
developed and approved by the group. The order of participants for specimen circulationwas agreed.
c) Measurements: Specimens were circulated among round robin participants. Every
participant performed measurements and collected image data according to the agreedprocedure.
d) Analysis of results: The results were gathered from all participants. Data analysis was
performed, and the synthesis report was composed.
5 Specimen preparation
5.1 General
The round-robin test specimens were fabricated to consider various interface configurations and conditions. Specimens were arranged into both cylindrical ferrule single fibre (1 ,25 mm zirconia material) and rectangular ferrule multi-fibre types (1 2-fibre MT with polyphenylene sulphide [PPS] material). Both multimode (50 µm core diameter) and single-mode specimens were produced.
5.2 Multimode specimens
The multimode specimens were further organised into categories that had pristine fibre end- face surface quality, and ones with low-level, light scratches (produced with a 1 µm diamond film) which still meet functional performance criteria. Furthermore, specimens were created with 1 to 3 heavy scratches (produced with a 5 µm diamond suspension), as well as a control without detectable heavy scratches. A summary describing all of the multimode variants is provided in Table 1 . A total of twelve multimode single-fibre specimens and twelve multi-fibre specimens (with three specimens per group) were produced. Images for each of the specimens are given in Figure 1 for the single-fibre and Figure 2 for the multi-fibre groups. All images were taken with an end face inspection system utilizing blue-light illumination, an objective having an NA of 0,40 and a magnification of 400 x (see Figure 1 to Figure 4).IEC TR 63367 pdf download.