Abstract

For the first time to our knowledge, we demonstrate simultaneous demodulation and slow-light delay of differential phase-shift keying (DPSK) signals at flexible bit rates using the stimulated-Brillouin-scattering-based optical filtering effect in optical fiber. Both 10 and 2.5Gbits DPSK signals have been demodulated and delayed with excellent performances. In the case of the10Gbits DPSK signal, after demodulation the tunable delay range with error-free operation is about 50ps, which we believe is the best result obtained for 10Gbits slow-light demonstrations. For the 2.5Gbits DPSK signal, the optimal sensitivity after demodulation is 36.5dBm, which is comparable with the back-to-back sensitivity of a 2.5Gbits nonreturn-to-zero signal.

© 2007 Optical Society of America

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