BS EN 60793-1-61:2017 establishes uniform requirements for measuring the polarization crosstalk of polarization-maintaining (PM) fibres.

This document gives two methods for measuring the polarization crosstalk of PM fibres. Method A is the power ratio method, which uses the maximum and minimum values of output power at a specified wavelength, and Method B is the in-line method, which uses an analysis of the Poincare sphere.

Details of each method are described in Clause 6.

Crosstalk values obtained by Methods A and B are based on different definitions.

The crosstalk measured by Method A is defined as an "averaged" value over a measured wavelength range. In contrast, the crosstalk value obtained from Method B shows the "worst case" crosstalk value.


Cross References:
IEC 60068-1:2013
EN 60793-1-1:2017
IEC 60793-1-1:2017
EN 60793-2-70:2017
IEC 60793-2-70:2017
EN 60068-1 (IEC 60068-1:2013) AS


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