CONTENTS

 1     Scope
 2     References
 3     Terms and definitions
        3.1     Definitions
        3.2     Terms defined in other Recommendations
 4     Abbreviations
 5     Classification of optical interfaces
        5.1     Applications
        5.2     Reference and physical configurations
 6     Parameter definitions
        6.1     System operating wavelength range
        6.2     Transmitter
                  6.2.1     Spectral characteristics
                  6.2.2     Mean launched power
                  6.2.3     Extinction ratio
                  6.2.4     Eye pattern mask
        6.3     Optical path
                  6.3.1     Attenuation
                  6.3.2     Dispersion
                  6.3.3     Dispersion compensation
                  6.3.4     Reflections
        6.4     Receiver
                  6.4.1     Sensitivity
                  6.4.2     Overload
                  6.4.3     Path penalty
                  6.4.4     Reflectance
 7     Optical parameter values
 8     Optical engineering approach
        8.1     Design assumptions
        8.2     Non-linearities
        8.3     Dispersion accommodation
                  8.3.1     Design principle
                  8.3.2     Passive dispersion compensation
                  8.3.3     Self phase modulation
                  8.3.4     Prechirp
                  8.3.5     Combinations of techniques
                  8.3.6     Dispersion supported transmission
        8.4     Standalone amplifiers
        8.5     Upgradability considerations
                  8.5.1     Types of upgrades
                  8.5.2     Guidelines of upgrades
        8.6     Optical safety considerations
Annex A – Extinction ratio and eye mask penalties
        A.1     Measurement parameters
        A.2     Extinction ratio penalty
        A.3     Eye mask penalty
        A.4     Receiver sensitivity
Appendix I – Polarization mode dispersion
        I.1     The statistical distribution of PMD
        I.2     The path penalty due to PMD
Appendix II – Description of SPM as dispersion accommodation
       II.1     SPM basics
       II.2     Using self phase modulation as a dispersion accommodation technique
       II.3     SPM-breakdown
       II.4     Optical parameter values for applications
       II.5     Source type
       II.6     Eye pattern mask
       II.7     Receiver
Appendix III – Dispersion Accommodation by means of DST
      III.1     Introduction
      III.2     Principle of the DST technique
      III.3     Optical receiver eye pattern mask after dispersive fibre transmission
      III.4     Parameter definitions
                III.4.1     Transmitter at reference point MPI-S
                III.4.2     Receiver at reference point MPI-R
      III.5     Optical parameter values
Appendix IV – Measurement of the chirp parameter a of the optical transmit signal
       IV.1     Measurement set-up
       IV.2     Technical requirements for the measuring equipment
       IV.3     Calibration
       IV.4     Measurement procedure
       IV.5     Data processing
       IV.6     Examples and interpretation of data
Appendix V – Upgradability considerations