Fundamental Research of Temporal and Spatial Optical Information Processing

本课题的研究目标是时空光学信息处理的基础研究。网络化社会对多媒体信息的需求日益增长，要求光纤通信系统具有超高的传输容量和超快的交换系统。为了实现这种超快信息处理系统，需要研制一种时间信号和空间信号的光学超快接口系统，为此，提出了一种基于超快脉冲激光的图像信号和时序信号的光学超快二维空间-时间-二维空间转换技术。为了验证所提出的技术，我们构建了实验系统。作为实验验证的结果，我们证实，所提出的技术是兼容的，目前的超快光纤通信系统。为了验证所构建系统的性能，我们实现了字符图像的传输和转换。利用与字符图像相对应的整形脉冲，可以超高速地获得字符图像。从研究结果中，我们可以获得重要的知识，该技术将成为下一代网络社会中多媒体信息的超快时空光子处理技术。

The objective of this project research is a fundamental research of temporal and spatial optical information processing. Increasing demands for multi-media information in a networked society requires an optical fiber communication system with ultra-high transmission capacity and ultrafast switching system. To realize such an ultrafast information processing system, it is necessary to develop an optical ultrafast interface system between temporal signal and spatial signal.For this purpose, we have proposed the novel optical ultrafast two-dimensional space-to-time-to-two-dimensional space conversion technique among image signals and time sequential ones with an ultra-fast pulse laser. To verify the proposed technique, we constructed the experimental system. As a result of experimental verification, we confirmed that the proposed technique is compatible with the current ultrafast optical fiber communication system. To demonstrate the capability of the constructed system, we implemented the character image transmission and transform. By using the shaped pulse corresponding to the character image, we can obtained the character image at a ultra-high speed. A rate of transform is over 3 Tbps.From the results of this research, we can obtain the important knowledge, with which the proposed technique would become an ultrafast temporal-spatio photonic processing technique for multimedia information in the next generation of networked society.