Four multiplexed, 8×8-bit 2-D parallel transmission based upon space-CDMA

4 channel multiplexing for 64 bit two dimensional (2-D) parallel optical data link based upon optical space-CDMA is experimentally demonstrated by using newly developed modules of optical spatial encoder and decoder. 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 it is transmitted through an image fiber having 10⁵ cores. Each receiver can recover the intended input bit-plane via the optical decoding process. Total error-rate is 2.73%. This result will encourage the application of optical space-CDMA to future high-throughput 2-D parallel data links connecting massively parallel processors.