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Novel scheme for ultrafast all-optical XOR operation

: Randel, S.; Melo, A.M. de; Petermann, K.; Marembert, V.; Schubert, C.


Journal of Lightwave Technology 22 (2004), Nr.12, S.2808-2815
ISSN: 0733-8724
Fraunhofer HHI ()

A novel scheme for all-optical exclusive-OR (XOR) operating at 160 Gb/s is proposed and analyzed by means of numerical simulations. It consists of a Mach-Zehnder interferometer (MZI) where a semiconductor optical amplifier (SOA) is placed in each of its arms. This SOA-MZI setup is coupled to a delay interferometer, which acts as a signal regenerator. It is shown that error-free operation can be achieved at a data rate of 160 Gb/s, indicating that the proposed scheme is not limited by the SOA recovery time.