ITU G.640:2006
ITU G.640:2006 Co-location Longitudinally Compatible Interfaces For Free Space Optical Systems Provides a procedure for establishing that two co-located Free Space Optical (FSO) transmission systems will not interfere with each other.
Table of Contents
1Scope2References
2.1Normativereferences
2.2Informativereferences
3Termsanddefinitions
3.1Definitions
3.2TermsdefinedinotherRecommendations
4Abbreviations
5Referencepoints
6Co-locationlongitudinalcompatibility
6.1CrosstalkratiobetweentwoFSOsystems
6.2Effectoftheweatheroncrosstalkratio
6.3CaseA-interferencebetweentwosystemsthatcan
beatthesamewavelength
6.4CaseB-interferencebetweentwosystemswhich
cannotbeatthesamewavelength
6.5Procedureforestablishingwhethertheconditions
forco-locationlongitudinalcompatibilityaremet
7Opticalsafetyconsiderations
AppendixI-Examplecrosstalkcalculations
I.1Example1
I.2Example2
I.3Example3