Optical Parallel Array Logic Network Information Processing System

本研究的目的是开发一个光电并行计算系统的基础上的并行计算架构称为OAL-NC（光阵列逻辑网络计算），其中光互连和光并行计算技术有效地结合起来。主要研究成果如下：1.从工艺特性的角度对OAL-NC体系结构的特点进行了研究和评价。该体系结构的有效性已被证实为一系列的算法，需要在本地和全局操作，如遗传算法。2.作为实现方法的OAL-NC架构，LSI（大规模集成），PLD（可编程逻辑器件），和MPE（多个过程实施例）的实现进行了研究。其中，MPE实现具有功能强、易于开发、系统平衡性好等优点。3.作为一个实验性的OAL-NC系统，构建了一个具有16 × 16处理单元的MPE实现系统。在该系统中，使用了16个收发机（Inmos T425），每个收发机将16个处理元件的功能仿真为软件处理。制作了发光二极管阵列和光电二极管阵列，实现了电子处理器和光学处理器的并行互连。4.作为光学处理器，设计了基于多重阴影投射的光学离散相关器。针对现有的器件，设计了光强均匀性和畸变校正的实验系统。5.设计了实验系统的命令集和消息协议。通过图像数据的编码和显示，验证了系统的基本操作。

This research aims to develop an optoelectronic parallel computing system based on a parallel computing architecture called OAL-NC (optical array logic network computing) in which optical interconnection and optical parallel computing technique are effectively combined. The obtained results are as follows :1.Features of the OAL-NC architecture has been studied and evaluated in terms of processing characteristics. Effectiveness of the architecture has been confirmed for a range of algorithms that require both local and global operations such as the genetic algorithm.2.As implementation methods for the OAL-NC architecture, LSI (large scale integration), PLD (programmable logic device), and MPE (multiple process embodiment) implementations were studied. Among them, the MPE implementation has advantages in high functionality, ease of development, and well system balancing.3.As an experimental OAL-NC system, an MPE-implemented system with 16 x 16 processing elements has been constructed. In the system, 16 Transputers (Inmos T425) are used each of which emulates functions of 16 processing elements as software processes. An array of light-emitting-diodes and an array of photo-diodes have been fabricated to achieve parallel interconnection between electronic and optical processors.4.As the optical processor, an optical discrete correlator has been designed based on multiple shadow-casting. For available devices, intensity uniformity and well-corrected distortion have been achieved.5.A command set and message protocols are designed for the experimental system. By encoding and display of image data, fundamental operations of the system have been verified.