Optical fibres -- Measurement methods and test procedures. Polarization crosstalk
This part of IECÂ 60793 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 Poincaré 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.
| SDO | BSI: British Standards Institution |
| Document Number | EN 60793-1-61 |
| Publication Date | Sept. 22, 2017 |
| Language | en - English |
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| Supercedes | |
| Committee | GEL/86/1 |
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