Abstract
We report record capacity data transmission at 305 Tb/s over 10.1 km, using space
division multiplexing (SDM) with 19 channels. To realize such a large SDM channel
number, we fabricated a trench-assisted homogeneous 19-core fiber with average intercore
crosstalk of about -32 dB at 1550 nm. We also fabricated a 19-channel SDM
multiplexer/demultiplexer using free-space optics with low insertion losses and low
additional crosstalk. The data signal transmitted through each SDM channel was 100
wavelength division multiplexing (100 GHz spacing) 2 × 86 Gb/s
polarization-division-multiplexed quadrature phase shift keying signals and the spectral
efficiency was 30.5 b/s/Hz.
© 2012 IEEE
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