Table of Contents

 1 Scope          
 2 References
 3 Definitions 
        3.1 Terms defined elsewhere        
        3.2 Terms defined in this Recommendation: Optical access architecture    
        3.3 Terms defined in this Recommendation: Optical parameters, power and loss budgets
 4 Abbreviations and acronyms             
 5 Conventions             
        5.1 Optical access concepts             
        5.2 Multi-wavelength PON system reference points           
        5.3 Power and loss budget parameters     
        5.4 Dynamic range, sensitivity and overload            
        5.5 Sensitivity and overload in the presence of forward error correction (FEC)        
        5.6 Reach and distance     
        5.7 Use of the term passive optical network (PON)             
        5.8 Use of the term optical distribution network (ODN)     
        5.9 Use of the terms optical network unit (ONU) and optical network termination (ONT)  
       5.10 Use of the terms T-CONT and Alloc-ID              
       5.11 Use of the terms bandwidth assignment and bandwidth allocation     
       5.12 Use of the terms band and range        
       5.13 Transmitter enable control and associated transient times      
 6 Architecture of the optical access network 
        6.1 Physical grouping of logical functions  
        6.2 ODN optical path loss classes  
        6.3 Fibre distance classes 
 7 Services      
 8 User network interface and service node interface
 9 Common optical network requirements      
        9.1 Layered structure of optical network  
        9.2 Wavelength plans for NG-PON2            
        9.3 Physical media dependent layer requirements              
10 Crosstalk-to-signal ratio tolerance for NG-PON2     
       10.1 Wideband X/S tolerance mask definition         
       10.2 Narrowband TWDM PON X/S tolerance mask
11 TWDM PON PMD layer requirements          
       11.1 PMD layer requirements         
       11.2 Upstream physical layer overhead      
Annex A – Tunable PtP WDM PON PMD layer requirements    
        A.1 PMD layer requirements         
Annex B – Auxiliary management and control channel    
Appendix I – Wavelength considerations for NG-PON2, XG-PON1, G-PON and RF video overlay distribution services    
Appendix II – Physical layer measurements required to support optical layer supervision    
Appendix III – Allocation of the physical layer overhead time    
Appendix IV – Jitter budget specifications for TWDM PON    
Appendix V – Measurement of TWDM PON burst mode acquisition time and burst node eye opening at OLT    
Appendix VI – Nonlinear Raman interactions in optical fibres and mitigation technologies for coexistence of multiple PONs    
Appendix VII – Cyclic AWG channel grid design examples    
      VII.1 Example AWG channel grid for 8-skip-0 at 100 GHz channel spacing     
      VII.2 Example AWG channel grid for 4-skip-0 at 100 GHz channel spacing     
      VII.3 Example AWG channel grid for 8-skip-0 at 50 GHz channel spacing       
      VII.4 Example AWG channel grid for 4-skip-0 at 50 GHz channel spacing       
Appendix VIII – Wavelength multiplexer, upstream inter-channel crosstalk, ONU transmitter tuning time considerations, and upstream channel grid example    
     VIII.1 Wavelength multiplexer         
     VIII.2 Upstream inter-channel crosstalk       
     VIII.3 ONU transmitter tuning time
     VIII.4 TWDM PON upstream channel grid example 
Appendix IX – Alternative line code for Raman mitigation    
       IX.1 8B10B Scheme              
       IX.2 Miller & Miller squared scheme            
       IX.3 Raman mitigation suppression levels  
Bibliography