We experimentally demonstrate four-channel multiplexing of 64-bit (8 × 8) two-dimensional (2-D) parallel data links on the basis of optical space–code-division multiple access (CDMA) by using new modules of optical spatial encoders and a decoder with a new high-contrast 9-m-long image fiber with 3 × 10⁴ cores. Each 8 × 8 bit plane (64-bit parallel data) is optically encoded with an 8 × 8, 2-D optical orthogonal signature pattern. The encoded bit planes are spatially multiplexed and transmitted 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 processors.

© 1998 Optical Society of America

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