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sklademVydáno: 2017-09-25
BS EN 60793-1-60:2017
Optical fibres Measurement methods and test procedures. Beat length
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| Označení normy: | BS EN 60793-1-60:2017 |
| Počet stran: | 26 |
| Vydáno: | 2017-09-25 |
| ISBN: | 978 0 580 93518 3 |
| Status: | Standard |
DESCRIPTION
BS EN 60793-1-60:2017
This standard BS EN 60793-1-60:2017 Optical fibres is classified in these ICS categories:
- 33.180.10 Fibres and cables
This part of IEC 60793 defines test methods for both the phase beat length, and the group beat length. These two parameters are defined differently, and will give different results depending on the type of polarization-maintaining (PM) fibre.
The phase beat length is the relevant parameter for the fibres ability to maintain a high extinction ratio. This is described in more details in Annexes A and B.