Bunning, H.H.BunningBurmeister, M.M.BurmeisterHermes, T.T.HermesRaub, F.F.RaubSaniter, J.J.SaniterSchmidt, F.F.SchmidtWerner, W.W.Werner2022-03-022022-03-021988https://publica.fraunhofer.de/handle/publica/175469Experiences gained with the installation and operation of an experimental communication system are reported. The system uses distributed switching in its narrow-band part, integrating ISDN services and high-speed data communication, and a star coupler as a central device. LiNbO3 optical switches behind the star coupler prevent line tapping. In the wideband subsystem, optical routing is used for videophone. The central device is a space-division-switching unit consisting of cascaded 4*4 LiNbO3 switching matrices. Both the narrowband and wideband parts of the system have been operated with bit error rates less than 10-9.enlocal area networksoptical fibresoptical linksswitching systemsfibre opticslanlocnetoptical routingdistributed switchingISDNhigh-speed data communicationstar couplerline tappingvideophonespace-division-switchingswitching matriceslinbo3 optical switches621384journal article