The implementation of a 10-channel parallel optical interconnect consisting of a two-dimensional array of vertical-cavity surface-emitting lasers, a 1.35-m fiber image guide, and a metal-semiconductor-metal receiver array is described. Transmission rates of 250 Mbits/s per channel are demonstrated with an optical cross talk of less than -27 dB and a loss of -3 dB. Coupling issues associated with image guides are analyzed and discussed.

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The authors compare transmission reach of 100 Gb/s four-level pulse amplitude modulated signals over single-span systems constructed with three optical fibre types. They demonstrate reach up to 160 km with fibres having ultra-low attenuation, one with a large effective area.