EN 60793-1-49:2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
OPTICAL FIBRES - PART 1-49: MEASUREMENT METHODS AND TEST PROCEDURES - DIFFERENTIAL MODE DELAY
02-02-2022
12-01-2013
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
4.1 Optical source
4.2 Stability
4.3 Launch system
4.4 Detection system
4.5 Computational equipment
5 Sampling and specimens
5.1 Test sample
5.2 Specimen endfaces
5.3 Specimen length
5.4 Specimen packaging
5.5 Specimen positioning
6 Procedure
6.1 Adjust and measure system response
6.2 Adjust detection system
6.3 Measure the test sample
7 Calculations and interpretation of results
7.1 Differential mode delay (DMD)
7.2 Minimum calculated effective modal bandwidth
7.3 Length normalization
8 Documentation
8.1 Report the following information for each test:
8.2 The following information shall be available upon request:
9 Specification information
Annex A (normative) Source spectral width limitation
Annex B (informative) Discussion of measurement details
Annex C (informative) Determining DMD weights for EMBc calculation
Annex D (informative) EMBc calculation information
Annex E (informative) Comparison between this standard and
ITU recommendations
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Bibliography
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