本文研究了时间相干性对光学信息处理系统噪声演绩的影响.用Wolf的部分相干光理论评价了输出信噪比.用输出信噪比作为信息处理系统噪声演绩的度量.输入及傅里叶平面上记录介质的颗粒噪声及相位起伏作为两个主要的噪声源.结果表明,除了在输入平面上的颗粒噪声外,输出信噪比一般都可以通过使用时间部分相干照明而得到改善.

The effect on noise performance of a white-light optical signal processor under temporally partial coherent illumination is presented. The output signal-to-noise ratio (SNE) is evaluated through the well-known partial coherence theory. This output SNE is used as a means of measurement for the noise performance of the proposed white-light processing system. The sources of noise considered are the grain-noise and the phase-noise at the input and Fourier plane. Except For the grain-noise at the input plane, we show that the output SNR can be improved considerably by using a broadband temporally partial coherent illnminatioii.