1 Scope and object
2 Reference documents
3 Apparatus
3.1 Light source
3.2 Input optics
3.3 Input positioner
3.4 Cladding mode stripper
3.5 Output positioner
3.6 Output optics
3.7 Computer
4 Samples and specimens
5 Procedure
6 Calculations of interpretation of results
7 Documentation
7.1 Information to be provided with each measurement
7.2 Information available upon request
Annex A Continuous wave dual-frequency method
Annex B Pulsed single-frequency method (PM)
Annex C List of acronyms and symbols
Bibliography