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Journals and Conferences
3 Tbit/s (160 Gbit/s/spl times/19 channels) optical signal is successfully transmitted over 40 km dispersion-shifted fiber. Low noise supercontinuum signal pulse sources and 70 nm bandwidth tellurite-based optical amplifiers are used for 3 Tbit/s signal generation and amplification.
We propose an optical flip-flop circuit composed of two-port resonant-tunneling filters based on a two-dimensional photonic crystal slab with a triangular air-hole lattice. This circuit can function as an optical digital circuit that synchronizes input data with a clock. In this report, we demonstrate that this circuit can achieve a fast operating speed… (More)
80-Gbit/s (20 Gbit/s/spl times/4) optical time-division multiplexing is demonstrated using an optical time-division multiplexer based on a hybrid integrated planar lightwave circuit. Each channel signals independently modulated by mixing in semiconductor optical amplifiers.
We introduce a novel laser synthesizer with a simple configuration that contains no phase lock loop. This laser synthesizer generates an optical beat signal by modulating a CW light using a phase modulator and selecting two line spectra from modulation sidebands using serially-connected fiber Bragg gratings. With this configuration, the optical beat signal… (More)
A new line code called “DmBlM” which is suitable for a very high-speed optical digital transmission system is described. This code possesses a good balance of marks and spaces, and has jitter suppression capability as well as a simple in-service error-monitoring function. This paper presents fundamental analyses of the DmBlM code and experimental results at… (More)