In recent years a dramatic expansion of internet data traffic has been reported. To provide high data rates in two directions via optical fibers, several methods have been developed. Most of them require both at each end a light source to generate the data and a detector to receive the data. Coupled semiconductor lasers - a system of two spatially separated nonlinear oscillators - are receiving major interest, because of a variety of interesting dynamical phenomena including chaos synchronization and injection locking. In order to realize a communication scheme, where the transmitter unites with the receiver, we take advantage of such a coupled injection locked semiconductor laser setup utilizing two 1550 nm discrete mode diode lasers (DL).
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