CONTENTS

 1     Scope         
 2     References
 3     Definitions
        3.1     General definitions   
        3.2     Mechanical characteristics     
        3.3     Mode field characteristics      
        3.4     Glass geometry characteristics            
        3.5     Chromatic dispersion definitions        
        3.6     Other characteristics
 4     Abbreviations and acronyms           
 5     Test methods         
        5.1     Test methods for the mode field diameter     
        5.2     Test methods for the cladding diameter, core concentricity error and cladding non‑circularity    
        5.3     Test methods for the cut-off wavelength        
        5.4     Test methods for the attenuation      
        5.5     Test methods for the chromatic dispersion    
        5.6     Test methods for the macrobend loss             
        5.7     Test methods for prooftesting            
Annex A – Chromatic dispersion fitting    
        A.1     General         
        A.2     Definition of equations and fitting coefficients            
        A.3     Fitting procedure      
Appendix I – Methods of cut-off wavelength interpolation    
        I.1                Limited negative error method 
        I.2                Least squares method  
Appendix II – Test method for measuring chromatic dispersion uniformity based on the backscattering technique    
       II.1     General          
       II.2     Test apparatus            
       II.3     Measurement procedure       
       II.4     Presentation of the results     
Appendix III – Example of a matrix model    
Bibliography