Spectrally efficient slow light using multilevel phase-modulated formats |
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| Authors: | Zhang Bo Yan Lianshan Zhang Lin Nuccio Scott Christen Louis Wu Teng Willner Alan E |
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| Affiliation: | Department of Electrical Engineering-Systems, University of Southern California, 3740 McClintock Avenue EEB 500, Los Angeles, California 90089, USA. boz@usc.edu |
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| Abstract: | A phase-preserving and spectrally efficient slow-light scheme has been proposed and demonstrated by utilizing advanced multilevel phase-modulated formats. A 60 ps symbol delay with error-free demodulation of both I and Q channels for 10 Gbit/s return-to-zero differential-quadrature-phase-shift-keyed (DQPSK) signals via a broadband stimulated Brillouin scattering-based slow-light medium is achieved experimentally. Simulation results on 20 Gbit/s DQPSK and 30 Gbit/s D8PSK propose to transmit very high spectrally efficient multilevel formats through a bandwidth-limited slow-light element. |
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