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 and DPSK signals have been demodulated and delayed with excellent performances. In the case of the DPSK signal, after demodulation the tunable delay range with error-free operation is about , which we believe is the best result obtained for slow-light demonstrations. For the DPSK signal, the optimal sensitivity after demodulation is , which is comparable with the back-to-back sensitivity of a nonreturn-to-zero signal.
© 2007 Optical Society of America
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