Table of Contents

 1 Scope            
 2 References   
 3 Terms and definitions               
        3.1 Terms defined elsewhere
        3.2 Terms defined in this Recommendation     
 4 Abbreviations and acronyms  
 5 Classification of optical interfaces         
        5.1 Applications      
        5.2 Reference points              
        5.3 Nomenclature   
        5.4 Interfaces at the reference points MPI-S_M, MPI-R_M, S_S and RS             
 6 Transverse compatibility          
 7 Parameter definitions
        7.1 General information        
        7.2 Interface at point S_S or MPI-SM   
        7.3 Optical path parameters from MPI-S_M to R_S or S_S to MPI-RM              
        7.4 Interface at point R_S or MPI-RM 
 8 Parameter values       
 9 Optical safety considerations  
Appendix I – Derivation of off-grid channel frequencies    
Bibliography