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Optical RAM and integrated optical memories a survey

机译：光RAM和集成光学回忆一项调查

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The remarkable achievements in the area of integrated optical memories and optical random access memories (RAMs) together with the rapid adoption of optical interconnects in the Datacom and Computercom industries introduce a new perspective for information storage directly in the optical domain, enabling fast access times, increased bandwidth and transparent cooperation with optical interconnect lines. This article reviews state-of-the-art integrated optical memory technologies and optical RAM cell demonstrations describing the physical mechanisms of several key devices along with their performance metrics in terms of their energy, speed and footprint. Novel applications are outlined, concluding with the scaling challenges to be addressed toward allowing light to serve as both a data-carrying and data-storage medium. Integrated optical memory technologies may in the future become an attractive option for storing data in an energy efficient and compact manner. The progress that has been made in the field has now been reviewed by three Greek researchers. Theoni Alexoudi and Nikos Pleros from Aristotle University of Thessaloniki and George Kanellos from University of Bristol describe how the energy consumption, speed and size of optical Random Access Memory (RAM) and flip-flop memory has been transformed over the past 25 years. They report how the footprint of optical memory cells has shrunk from the meter to the sub-micrometer scale, while the energy per bit has now reached 1-fJ/bit and access times have approached a few tens of picoseconds. Schemes based on semiconductor optical amplifiers, micro-ring and micro-disk lasers and photonic crystals are all discussed.
机译：集成光学存储器和光学随机接入存储器（RAM）的显着成果以及Datacom和Computercom行业中的光学互连的快速采用，直接在光学域中引入了新的信息存储的新视角，使得能够快速访问时间，利用光学互连线路增加带宽和透明合作。本文介绍了最先进的集成光存储技术和光RAM小区演示，描述了几个关键设备的物理机制以及它们的能量，速度和足迹方面的性能指标。概述了新的应用程序，结论是朝向允许光作为数据携带和数据存储介质的缩放挑战。未来集成光存储器技术可以成为一种有吸引力的选择，用于以节能和紧凑的方式存储数据。现在，该领域所取得的进展已被三个希腊研究人员审查。 Theoni Alexoudi和来自Bristol大学的塞尔尼基大学的Aristotle大学的尼科斯·普罗斯（George Kanellos）描述了在过去的25年中如何改变光随机存取存储器（RAM）和触发器内存的能耗，速度和大小。他们报告了光学存储器单元的足迹如何从仪表缩小到子微米尺度，而现在每位的能量现在已达到1-FJ /位，并且访问时间接近了几十个皮秒。基于半导体光学放大器，微环和微磁盘激光器和光子晶体的方案都讨论。

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