IEC 60793-1-49:2018
Current
The latest, up-to-date edition.
Optical fibres - Part 1-49: Measurement methods and test procedures - Differential mode delay
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English, English - French
15-08-2018
IEC 60793-49:2018 applies only to multimode, graded-index glass-core (category A1) fibres. The test method is commonly used in production and research facilities, but is not easily accomplished in the field. This document describes a method for characterizing the modal structure of a graded-index multimode fibre. This information is useful for assessing the bandwidth performance of a fibre especially when the fibre is intended to support a range of launch conditions, for example, those produced by standardized laser transmitters. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) better alignment with original intent by filling some omissions and therefore improving measurement rigor;
b) the measurement of fibres with smaller differential mode delay (and higher modal bandwidth) such as type A1a.3 fibres of IEC 60793-2-10 that are used in constructing OM4 performance category cables; new requirements on specifying detector amplitude and temporal response, specimen deployment conditions, four-quadrant scanning, and uniformity of radial locations for calculating bandwidth.
Keywords: modal structure of a graded-index multimode fibre, bandwidth performance
Committee |
TC 86/SC 86A
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DocumentType |
Standard
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Pages |
0
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PublisherName |
International Electrotechnical Committee
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Status |
Current
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Supersedes |
Standards | Relationship |
EN IEC 60793-1-49:2018 | Identical |
CEI EN IEC 60793-1-49 : 2019 | Identical |
BS EN IEC 60793-1-49:2018 | Identical |
VDE 0888-249:2:2019-10 | Identical |
NEN-EN-IEC 60793-1-49:2018 | Identical |
DIN EN IEC 60793-1-49:2019-10 | Identical |
DS/EN IEC 60793-1-49:2018 | Identical |
UNE-EN IEC 60793-1-49:2018 | Identical |
PN-EN IEC 60793-1-49:2019 | Identical |
CEI EN IEC 62149-3:2024 | Fibre optic active components and devices - Performance standards - Part 3: Modulator-integrated laser diode transmitters for 40-Gbit/s fibre optic transmission systems |
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