OPTICAL IMPLEMENTATION OF A MULTIWAVELENGTH HALF-ADDER

被引:13
|
作者
YEH, PC
CAMPBELL, S
ZHOU, SM
机构
[1] Electrical and Computer Engineering, University of California, Santa Barbara, Santa Barbara, CA
[2] Rockwell International Science Center, Thousand Oaks, CA
关键词
Binary adders - Carry circuits - Digital logic operations - Half adders - Parallel operations - Sum in a half adder - Two-bit binary coded numbers;
D O I
10.1364/OL.18.000903
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report optical implementations of multiwavelength digital logic operations, demonstrating a half-adder that utilizes photoinduced gratings in photorefractive media. Phase-matched diffraction from multigratings is employed to achieve spectrally parallel arithmetic operations of CARRY, whereas multiwavelength holographic interference is employed to achieve spectrally parallel arithmetic operations of SUM. We also propose the use of phase-matched cross-polarization readout in uniaxial photorefractive crystals to achieve collinear operation. We show that a parallelism of hundreds of bits is possible.
引用
收藏
页码:903 / 905
页数:3
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