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Inter-core crosstalk of fabricated multi-core fiber was statistically evaluated to be less than -77.6 dB after 17.4-km propagation for λ=1550 nm using newly-developed method. The crosstalk was estimated to be less than -30 dB after 10,000 km.
We demonstrate record 109-Tb/s transmission of spatial division multiplexed (SDM) signals over 16.8 km using a seven-core fiber. Each SDM channel contains 97 WDM channels on a 100-GHz grid and 2×86-Gb/s polarization-multiplexed QPSK signals.
Propagation characteristics of seven-core fiber were investigated for multiplexed signals of spatial-division and wavelength-division. Effect of chromatic dispersion and inter-core crosstalk were evaluated for 5-km fiber by using 10-Gbit/s channels.
We designed and fabricated a multi-core fiber whose attenuation is less than 0.18 dB/km and effective area is about 80 μm2. Crosstalk was observed be less than -55.5 dB after 17.6 km propagation.
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