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
6
Parameter
definitions
6.1
System
operating wavelength range
6.2
Transmitter
6.3
Optical
path
6.4
Receiver
7
Optical
parameter values for SDH applications
8
Optical
engineering approach
8.1
Design
assumptions
8.2
Worst-case
design approach
8.3
Statistical
design approach
8.4
Upgradeability
considerations
8.5
Joint
engineering
Annex A –
System operating wavelength considerations
A.1
Operating
wavelength ranges determined by fibre attenuation
A.2
Operating
wavelength ranges determined by fibre dispersion
Annex B –
Measurement of the mask of the eye diagram of the optical transmit signal
B.1
Measurement
set-up
B.2
Transfer
function of the optical reference receiver
Appendix I
– Methods for measuring reflections
I.1
Optical continuous-wave
reflectometer
I.2
Optical time-domain reflectometer
Appendix II
– Implementation of the Consecutive Identical Digit (CID) immunity measurement
II.1
Introduction
II.2
Method
Appendix
III – Possible method for evaluating aging margin contribution in receiver
sensitivity specifications
III.1
Receiver
sensitivity and eye opening
III.2
S/X test method
Appendix IV
– Upgradeability examples
IV.1
Example
1
IV.2
Example
2