00349nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001700078100001900095245004300114260001600157650004200173300520261006003653.0120911s9999    xx            000 0 und d  a007057216X  a621.3827 SIB  aSibley, M.J.N.  aOptical communications / M.J.N. Sibley  aMcgraw Hill  aSignal processing- digital techniques