4-CHANNEL, 8X8 BIT, 2-DIMENSIONAL PARALLEL TRANSMISSION BY USE OF SPACE-CODE-DIVISION MULTIPLE-ACCESS ENCODER AND DECODER MODULES

We experimentally demonstrate four-channel multiplexing of 64-bit (8 x 8) two-dimensional (2-D) parallel data links on the basis of optical space-code-division multiple access (CDMA) by using new modules of opt ical spatial encoders and a decoder with a new high-contrast 9-m-long image fiber with 3 x 10(4) cores. Each 8 x 8 bit plane (64-bit paralle l data) is optically encoded with an 8 x 8, 2-D optical orthogonal sig nature pattern. The encoded bit planes are spatially multiplexed and t ransmitted through an image fiber. A receiver can recover the intended input bit plane by means of an optical decoding process. This result should encourage the application of optical space-CDMA to future high- throughput 2-D parallel data links connecting massively parallel proce ssors. (C) 1998 Optical Society of America.