With the prevalence and development of IP applications based on Internet, traditional Internet Infrastructure can not address the demand of many high bandwidth and data-incentive applications. Grid technology is introduced to meet the demand of such applications, but bandwidth and transmission speed is still a serious problem. With the big growth in optical network technology, the trend becomes evident to integrate the grid technology and that of optical network, which
results in the research of next generation infrastructure for optical network: Photonic Grid. This article presents the key techniques and emphases of research in the new infrastructure and mainly talks about the infrastructure, the way of switching and routing, the scheme of control and management and middle ware. In the end, we give some appropriate advice in future research orientation of theory and techniques for Photonic Grid.