Shipulin, A.A.ShipulinOnishchukov, G.G.OnishchukovMichaelis, D.D.MichaelisRiedel, P.P.RiedelPeschel, U.U.PeschelLederer, F.F.Lederer2022-03-032022-03-032002https://publica.fraunhofer.de/handle/publica/20253710.1016/S0030-4018(02)01719-410 Gbit/s RZ signal transmission at 1.3 m in a fiber transmission system with in-line semiconductor optical amplifiers is investigated using a recirculating fiber loop setup. We found that under certain conditions the system operates without in-line filtering and with strongly saturated amplifiers, provided the signal is extracted from the amplified spontaneous emission by means of a narrow optical filter in front of the receiver. These results are compared with a transmission scheme with in-line filtering.enoptical signal transmissionsemiconductor optical amplifiersolutionsaturable absorberoptical fiber620535journal article