12*622 Mbit/s, DC coupled synchronous optical receiver array for parallel digital datalinks

The authors report a hybrid DC coupled 12 channel synchronous optical receiver array for a parallel digital datalink at 622 Mbit/s. Low interchannel crosstalk (<-40 dB) and low bit error rates (<10/sup -12/) have been obtained with good decision phase margins (330 degrees ) across all the channels.