Fundamental Research of Temporal and Spatial Optical Information Processing

本课题研究的目标是时间和空间光学信息处理的基础研究。网络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传输容量和超快交换能力。为了实现这样的超快信息处理系统，有必要开发一种时间信号和空间信号之间的光学超快接口系统，为此，我们提出了一种新型的光学超快二维空间-时间-时间-二维空间转换技术，该技术利用超快脉冲激光在图像信号之间和时间序列信号之间进行转换。为了验证所提出的技术，我们构建了实验系统。通过实验验证，该技术与现有的超高速光纤通信系统兼容。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。通过使用与字符图像对应的整形脉冲，可以获得超高速的字符图像。从本研究的结果中，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一种超高速的多媒体信息时空光子处理技术。

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.