IEC 60793-1-4:2001

FOREWORD
Clause
1 Scope and object
2 Normative references
3 Tests of transmission and optical characteristics
4 Attenuation
5 Operational definitions
6 Description of attenuation measuring techniques
7 Method IEC 60793-1-C1A - Cut-back technique
   7.1 Launching conditions
   7.2 Examples of launching conditions
   7.3 Apparatus
   7.4 Procedure
   7.5 Results
8 Method IEC 60793-1-C1B - Insertion loss technique
   8.1 Object
   8.2 Launching conditions
   8.3 Apparatus
   8.4 Procedure
   8.5 Results
9 Method IEC 60793-1-C1C - Backscattering technique
   9.1 Object
   9.2 Apparatus
   9.3 Test sample
   9.4 Test procedure - Measurement of fibre or cable
        attenuation using an OTDR
   9.5 Test procedure - Measurement of fibre or cable
        length using an OTDR
   9.6 Test procedure - Measurement of fibre point
        discontinuities using an OTDR
   9.7 Results
10 Method IEC 60793-1-C1D - Spectral attenuation modelling
   10.1 Object
   10.2 Apparatus
   10.3 Test sample
   10.4 Test procedure
   10.5 Calculations
   10.6 Results
11 Modal baseband response
   11.1 Definitions
   11.2 Operational definitions
12 Description of baseband response measuring methods
13 Method IEC 60793-1-C2A - Impulse response
   13.1 Launching conditions
   13.2 Apparatus
   13.3 Procedure
   13.4 Results
14 Method IEC 60793-1-C2B - Frequency response
   14.1 Launching conditions
   14.2 Apparatus
   14.3 Procedure
   14.4 Results
15 Method IEC 60793-1-C3 - Microbending sensitivity
   15.1 Description
   15.2 Method IEC 60793-1-C3A - Expandable drum
   15.3 Method IEC 60793-1-C3B .Fixed diameter drum
   15.4 Method IEC 60793-1-C3C - Wire mesh microbending
        test method
16 Method IEC 60793-1-C4 - Transmitted or radiated
   light power
   16.1 Definitions
   16.2 Object
   16.3 Apparatus
   16.4 Procedure
   16.5 Results
17 Method IEC 60793-1-C5A - Chromatic dispersion
   measurement of optical fibres by the phase-shift
   method
   17.1 Object
   17.2 Apparatus
   17.3 Test sample and calibration fibre
   17.4 Test procedure
   17.5 Results
18 Method IEC 60793-1-C5B - Chromatic dispersion
   measurement by spectral group delay measurement
   in the time domain
   18.1 Object
   18.2 Apparatus
   18.3 Test sample
   18.4 Test procedure
   18.5 Results
19 Method IEC 60793-1-C5C - Chromatic dispersion
   measurement of optical fibres by the differential
   phase-shift method
   19.1 Object
   19.2 Apparatus
   19.3 Test sample
   19.4 Test procedure
   19.5 Results
20 Method IEC 60793-1-C5D - Chromatic dispersion
   measurement of optical fibres by interferometry
   20.1 Object
   20.2 Specimen
   20.3 Apparatus
   20.4 Procedure
   20.5 Calculations
21 Chromatic dispersion measurements
   21.1 A1 multimode and B1 single-mode fibres
   21.2 Category B2 fibres
   21.3 Category B3 fibres
22 Method IEC 60793-1-C6 - Numerical aperture -
   Far field light distribution
   22.1 Operational definitions - Numerical aperture
   22.2 Method IEC 60793-1-C6 - Far field light distribution
23 Cut-off wavelength
24 Method IEC 60793-1-C7 - Cut-off wavelength
   measurement of single-mode fibre
   24.1 Object
   24.2 Description
   24.3 Apparatus
   24.4 Test sample
   24.5 Test procedure
   24.6 Calculations
   24.7 Results
25 Mode field diameter
   25.1 Definitions
26 Method IEC 60793-1-C9A - Mode field diameter
   measurement - Direct far field scanning method
   26.1 Object
   26.2 Apparatus
   26.3 Test sample
   26.4 Test procedure
   26.5 Calculations
   26.6 Results
27 Method IEC 60793-1-C9B - Mode field diameter
   measurement - Variable aperture method in the
   far field
   27.1 Object
   27.2 Apparatus
   27.3 Test sample
   27.4 Test procedure
   27.5 Calculation
   27.6 Results
28 Method IEC 60793-1-C9C - Mode field diameter
   measurement near field scan method
   28.1 Object
   28.2 Apparatus
   28.3 Test sample
   28.4 Test procedure
   28.5 Calculations
   28.6 Results
29 Method IEC 60793-1-C9D - Characterization of
   mode field diameter of single-mode optical fibre
   by OTDR
   29.1 Object
   29.2 Apparatus
   29.3 Procedure
   29.4 Calculations
   29.5 Results
30 Change in optical transmittance
31 Method IEC 60793-1-C10A - Transmitted power monitoring
   31.1 Object
   31.2 Sample preparation
   31.3 Apparatus
   31.4 Launching conditions
   31.5 Reference sample
   31.6 Procedure
   31.7 Results
32 Method IEC 60793-1-C10B - Backscattering monitoring
   32.1 Object
   32.2 Sample preparation
   32.3 Apparatus
   32.4 Procedure
   32.5 Results
33 Method IEC 60793-1-C11 - Macrobending sensitivity
   33.1 Object
   33.2 Apparatus
   33.3 Procedure
   33.4 Results
Annex A (normative) Mode field diameter data set for
        far field Petermann integral

Applies to practical measurements of transmission and optical parameters of fibres. The methods are for use in inspection of fibres and cables for commercial purposes.