Transmission of eight 20-Gb/s channels over 232 km of conventional single-mode fiber

As a demonstration of the upgradeability of conventional single-mode fiber systems, we demonstrate the transmission of eight 20-Gb/s channels over 232 km of nondispersion-shifted fiber using dispersion-compensating fiber with negative dispersion-slope. All channels were received without discernible transmission penalties. Due to fiber nonlinearity, differences were observed in system performance depending on the arrangement of the fibers.<
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