DIN EN 60793-1-45 : 2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 1-45: MEASUREMENT METHODS AND TEST PROCEDURES - MODE FIELD DIAMETER
11-14-2022
01-12-2013
INTRODUCTION
1 Scope
2 Normative references
3 Reference test method
4 Apparatus
4.1 Light source
4.2 Input optics
4.3 Input positioner
4.4 Cladding mode stripper
4.5 High-order mode filter
4.6 Output positioner
4.7 Output optics
4.8 Detector
4.9 Computer
5 Sampling and specimens
5.1 Specimen length
5.2 Specimen end face
6 Procedure
7 Calculations
7.1 Method A - Direct far-field scan
7.2 Method B - Variable aperture in the far field
7.3 Method C - Near-field scan
8 Results
8.1 Information to be provided with each measurement
8.2 Information available upon request
9 Specification information
Annex A (normative) Requirements specific to method A -
Mode field diameter by direct far-field scan
Annex B (normative) Requirements specific to method B -
Mode field diameter by variable aperture in the
far field
Annex C (normative) Requirements specific to method C -
Mode field diameter by near-field scan
Annex D (normative) Requirements specific to method D -
Mode field diameter by optical time domain
reflectometer (OTDR)
Annex E (informative) Sample data sets and calculated values
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
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