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In this paper we propose a new technique that enables optical single sideband generation for optical subcarrier multiplexing. A high sideband suppression ratio is achieved across the full RF spectral band.
We proposed and experimentally demonstrated polarization shift keying (PolSK) label over vestigial sideband carrier suppressed return-to-zero (VSB-CSRZ) payload for 43 Gb/s all-optical label switching network. This is a candidate technique for the next generation optical network.
We demonstrated 80 Gb/s optical differential quadrature-shift-keying modulation, by using a single-chip integrated LiNbO3 modulator with two sub Mach-Zehnder interferometers, where 40 Gb/s in-phase and quadrature data were, simultaneously, fed to the modulator.
3-bit/symbol optical modulation scheme is proposed using dark-return-to-zero (DRZ), differential-phase-shift-keying (DPSK) and polarization-shift-keying (PolSK). Transmission performance of the 3 times10 Gb/s signal is investigated.
We explore monitoring techniques by simulation and experiment for 2-and 4-level, intensity-and phase-modulation data. DOP for PMD up to 200-ps and clock-tone for dispersion up to 1500-ps are examined for 10-Gsymbol/s RZ and NRZ systems.
We employ a delay interferometer to enhance the data rate of the semiconductor-optical-amplifier-based inverse-return-to-zero (IRZ) generation to 40 Gbit/s and investigate the improved performance of 40-Gbit/s IRZ/10-Gbit/s DPSK orthogonal modulation using reshaping-assisted demultiplexer in optical-time-division-multiplexed systems.
Techniques for generation and detection of optical minimum-shift keying signals are presented. The property of optical MSK and expected performance in high speed optical transmission system are discussed.
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