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光学处理机能在很宽频带平行处理大量信息。目前的处理项目主要局限于加、减、傅里叶变换、自相关和互相关,以及希伯特(Hibert)变换。当前使用的两种类型光学处理机是:(1)用激光作照明光源的相干系统;(2)用白光作照明光源或者是本身发光的非相干系统。这些装置的广泛应用受到以下三个因素的影响:·高速图象读入装置:非相干处理机无需把图象(比特编码的二维强度分布)转化为电子信号,而是直接通过光子工作。·高速读出装置:还未具有高分辨率,并且是高速的线性读出装置。
Optical processors handle large amounts of information in parallel over a wide bandwidth. The current treatment project is mainly limited to addition, subtraction, Fourier transform, autocorrelation and cross-correlation, and Hibert transformation. Two types of optical processors currently used are: (1) a coherent system using a laser as an illumination source, (2) a non-coherent system using white light as an illumination source or itself emitting light. The widespread use of these devices is impacted by three factors: High-speed image read-in devices: Non-coherent processors do not need to convert images (two-dimensional intensity distribution of bit-codes) into electrical signals and work directly with photons. High-speed reading device: not yet have high resolution, and is a high-speed linear readout device.