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本文在以波长编码实现双极光神经网络的方案基础上，对表示加权求和正、负值的两组光．点，通过在光寻址液晶光阀的相应位置加上不同．的偏置，使其分别工作在正、反态，从而实现对代表正、负值的光强的调制．然后利用光栅的移位作用，把各组的两个光点叠加到一起，其合光强即是所期望的加权求和正、负值的相减结果．通过调整液晶光阀的工作参数，得到了理想输入输出响应曲线；并用光栅实现了移位，从而在实验上验证了该方案的可行性．
Based on the scheme of wavelength coding for the realization of Bipolar Neural Network, this paper presents two groups of light which represent weighted sum of positive and negative values. Point, by adding the corresponding position in the light addressing liquid crystal light valve different. Bias, so that they were working in the positive and anti-state, in order to achieve on behalf of positive and negative light intensity modulation. And then use the grating shift effect, the two groups of light spots superimposed together, its combined light intensity is the desired weighted sum of positive and negative subtraction results. By adjusting the operating parameters of the liquid crystal light valve, the ideal input - output response curve is obtained. The grating is used to realize the displacement, and the feasibility of the scheme is verified experimentally.