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BS EN IEC 62614-1:2020

BS EN IEC 62614-1:2020

$102.76

Fibre optics. Multimode launch conditions – Launch condition requirements for measuring multimode attenuation

Published By Publication Date Number of Pages
BSI 2020 20
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This part of IEC 62614 describes the launch condition requirements used for measuring multimode attenuation in passive components and in installed cable plants.

In this document, the fibre types that are addressed include category A1-OMx, where x = 2, 3, 4 and 5 (50 µm/125 µm), and A1-OM1 (62,5 µm/125 µm) multimode fibres, as specified in IEC 60793-2-10. The nominal test wavelengths detailed are 850 nm and 1 300 nm. This document can be suitable for multimode attenuation measurements for other multimode categories and/or other wavelengths, but the source condition for other categories and wavelengths are not defined here.

The purpose of these requirements is as follows:

  • to ensure consistency of field measurements when different types of test equipment are used;

  • to ensure consistency of factory measurements when different types of test equipment are used;

  • to ensure consistency of field measurements when compared with factory measurements.

This document describes launch condition requirements for optical attenuation using sources with a controlled encircled flux (EF).

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
8 CONTENTS
9 FOREWORD
11 1 Scope
2 Normative references
3 Terms and definitions
12 4 Background on multimode launch conditions
13 5 Test source launch
5.1 General
5.2 Encircled flux
5.3 Encircled flux template illustration
14 5.4 Encircled flux target for attenuation measurement
Figures
Figure 1 – EF template illustration for 50 µm core fibre cabling at 850 nm
Tables
Table 1 – EF target for 50 µm core fibre at 850 nm
Table 2 – EF target for 50 µm core fibre at 1 300 nm
15 5.5 Harmonization of multimode launch conditions to eliminate wavelength bias
Figure 2 – Wavelength comparison
Table 3 – EF target for 62,5 µm fibre at 850 nm
Table 4 – EF target for 62,5 µm fibre at 1 300 nm
16 5.6 Uncertainties expectations
5.7 Encircled flux limits
Table 5 – Attenuation, threshold tolerance and confidence level
17 5.8 Practical limitations of multimode launch conditions
18 Bibliography

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BS EN IEC 62614-1:2020
$102.76