Research of Spatio-Temporal Developing Information Processing Based on Optical Feedback

本研究旨在发展一种新的基于光反馈系统的时空光信息处理方法。为此，研究了时空发展信息处理的实验系统、时空信息的固定方法和时空信息压缩。得到的结果如下：1.作为光反馈的一个实例，建立了基于二维仿射变换的反馈系统的模型，并利用电视反馈系统搭建了实验实验台。针对仿射变换反馈系统控制分形生成的问题，建立了迭代函数系统的母函数，并验证了其有效性。提出了一种利用仿射变换反馈系统产生二维随机图案的方法。仿真结果验证了该方法对流密码的适用性。为了提高光反馈系统的处理重复性，发展了空间分割和波长分离方法。在二维随机图案生成中的应用验证了该方法的有效性。对于基于不动点定理和区间运算的高精度计算技术，推导了影响计算精度和处理效率的参数。考虑了参数的设置协议。利用时空转换和空间频率复用技术，提出了一种二维空间图像与超快时间信号之间的转换方法。采用光寻址空间光调制器的实验系统验证了时空转换方法的原理，并验证了该方法的正确性。

This study aims to develop a new method for spatio-temporal optical information processing based on an optical feedback system. For the purpose, an experimental system for spatio-temporal developing information processing, a fixing method for spatio-temporal information, and an spatio-temporal information compression are investigated. The obtained results are as follows :1. As an instance of the optical feedback, a feedback system based on two dimensional affine transformations is modeled, and an experimental test-bed is constructed using a TV feedback system.2. To control fractal generation by the affine transform feedback system, a mother function for the iterated-function- system is developed and the effectiveness is confirmed.3. A method for two dimensional random pattern generation is considered by the affine transform feedback system. Simulation results verify the applicability of the method to stream cipher.4. Spatial division and wavelength separation methods are developed to increase the processing reproducibility by the optical feedback system. Application to two dimensional random pattern generation confirms the effectiveness.5. For the high-precision calculation technique based on the fixed point theorem and the interval arithmetic, parameters on calculation precision and processing efficiency are derived. The setup protocol for the parameters are considered.6. A conversion method between two dimensional spatial images and ultrafast temporal signals is developed using the time-to-space conversion and the spatial frequency multiplexing techniques.7. An experimental system with an optically-addressed spatial light modulator verifies the principle of the spatio- temporal conversion method and the correct operation is confirmed.