NF EN 60793-1-60

Optical fibres - Part 1-60 : measurement methods and test procedures - Beat length

Le présent document définit des méthodes d'essai tant pour la longueur de battement de phase que pour la longueur de battement de groupe. Ces deux paramètres sont définis de manière différente et produisent des résultats différents selon le type de fibre à maintien de polarisation (PM - polarization-maintaining). La longueur de battement de phase est le paramètre approprié de la capacité des fibres à maintenir un rapport d'extinction élevé.

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