Cover E DIN EN 60793-1-49 VDE 0888-249:2017-05

E DIN EN 60793-1-49 VDE 0888-249:2017-05

* German Language Version *

Optical fibres

Part 1-49: Measurement methods and test procedures – Differential mode delay

(IEC 86A/1777/CD:2016)
Class/Status: Draft, valid
Released: 2017-05   Published: 2017-04-07
VDE Art. No.: 1800351
End of objection deadline: 2017-06-07


This part of IEC 60793 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 standard 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.