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本文简单地评述了实现光学数字计算机的可能性和最近几年来的发展状况.详细地讨论了光计算机中的关键元件——光学双稳态器件作为光计算机中的开关元件和逻辑元件的工作原理及各种双稳器件的性能及发展状况.指出了集成光学波导器件和双稳器件为实现数字光计算机创造了有利条件.尤其是室温工作的光学双稳态GaAs-GaAl器件的出现,为实现光计算机奠定了基础.光学双稳态器件有带宽大(大于10~(13)Hz),开关时间短(小于10~(-12)秒),能并行处理、直接处理光信号等优点.
This article briefly reviews the possibility of implementing an optical digital computer and the recent developments in the past few years.It discusses in detail the working principle of an optical bistable device as a switching element and a logic element in an optical computer And the performance and development of various bistable devices.It is pointed out that the integrated optical waveguide device and the bistable device have created favorable conditions for the realization of the digital light computer, especially the appearance of the optical bistable GaAs-GaAl device working at room temperature, The optical bistable device has the advantages of large bandwidth (more than 10 ~ (13) Hz), short switching time (less than 10 ~ (-12) s), parallel processing and direct processing of optical signals.