Abstract

A polarization-encoded optical shadow-casting (POSC) system¹ exploits the parallelism of optics to process 2-D coded input data in parallel. Previously, a multiplier² was designed capable of generating four output bits in parallel; however, each input required 9-pixel subcells for encoding. In the current work, the previous design is optimized using minterm pairing and associative sharing of minterm pairs¹ among different output bits. The resulting size of the pixel then becomes 6. The design process exemplifies how in a systematic way one can design a highly optimized POSC computing module. All multiplier outputs are generated and detected in parallel. The resulting coding of the inputs and the space variant output decoding mask to detect the outputs in parallel are provided.

© 1991 Optical Society of America