未来通信网需要处理大量信息,如图象、电话和数据业务等信息,因此需要超快速和宽带的信号传输/处理技术,为此NTT公司一直在研究新型全光信号处理回路,这种回路能充分利用光技术的潜在优点,如高速和平行处理能力.本文主要围绕时域和空域技术,总结全光信号处理的最近研究和对未来的展望. The future communications network needs to process large amounts of information, such as image, telephone and data services, and therefore requires ultra-fast and broadband signal transmission / processing techniques, for which NTT Corporation has been studying a new all-optical signal processing loop that can Take full advantage of the potential benefits of optical technology, such as high-speed and parallel processing capabilities.This paper focuses on time and space techniques, summarizes recent research on all-optical signal processing and looks ahead to the future.