Kreissl, J.J.KreisslBrinker, W.W.BrinkerLenz, E.E.LenzGärtner, T.T.GärtnerRehbein, W.W.RehbeinBauer, S.S.BauerSartorius, B.B.Sartorius2022-03-102022-03-102005https://publica.fraunhofer.de/handle/publica/348640Complex-coupled and index-coupled DFB lasers are fabricated and characterized regarding their feedback sensitivity. The feedback stability is improved by 15 dB using the complex coupling. BER measurements demonstrate the potential for isolator-free transmitter application.en621Isolator-free directly modulated complex-coupled DFB lasers for low cost applicationsconference paper