IEC TS 61941:2000

FOREWORD
Clause
1 Scope and object
2 Symbols
3 Apparatus
   3.1 Light source
   3.2 Optical signal adjustments
        3.2.1 Method A
        3.2.2 Method B
        3.2.3 Method C
   3.3 Input optics (all methods)
        3.3.1 Fibre pigtail
        3.3.2 Optical lens system
        3.3.3 Cladding mode stripper
   3.4 Output optics
   3.5 Signal detection
   3.6 Computational equipment
   3.7 Output signal polarization adjustments
4 Test sample
5 Procedure
   5.1 Method A
   5.2 Method B
   5.3 Method C
        5.3.1 Equipment calibration
        5.3.2 Test procedure
6 Calculations
   6.1 Method A
        6.1.1 Cycle counting
        6.1.2 Fourier analysis
        6.1.3 Transform data fitting
        6.1.4 Spectral range
   6.2 Method B
        6.2.1 Display of DGD versus wavelength
        6.2.2 Average DGD
        6.2.3 PMD coefficient
   6.3 Method C
        6.3.1 Weak mode coupling
        6.3.2 Strong mode coupling
7 Results
Annex A (informative) Determination of mode coupling regime
Annex B (informative) Strategies for improving precision
Annex C (informative) Peak identification algorithm for
                      cycle counting for method A
Annex D (informative) Fourier analysis theoretical background
                      for method A
Annex E (informative) Determination of PMD for method B
                      (Jones matrix method)
Annex F (informative) Sample calculation for method B
Annex G (informative) PMD determination by method C for an
                      interferogram with an autocorrelation
                      peak
Annex H (informative) PMD intercomparison results and
                      observations
Bibliography

Describes three test methods for measuring the polarization mode dispersion (PMD) of single mode optical fibres of type B. Applicable to both short and long fibres in the limits of both zero and strong polarization mode coupling.