光突发交换是交换粒度介于光电路交换(即波长交换)和光分组交换之间的一种光交换模式,因为它克服了光电路交换和充分组交换的缺点,具有很大的技术优势,很有可能成为下一代互联网骨干网络的核心技术,真正实现光子互联网。本文介绍光突发交换技术的基本原理,讨论了光突发交换的协议、突发封装和在IP骨干网中的应用等问题,并指出在这项技术得到应用之前需要解决的诸多课题。 Optical burst switching is an optical switching mode with switching granularity between optical circuit switching (ie, wavelength switching) and optical packet switching because it overcomes the shortcomings of optical circuit switching and full group switching and has great technical advantages. Is likely to become the core technology of the next generation of the Internet backbone network, the real realization of photonic Internet. This paper introduces the basic principles of optical burst switching technology, discusses the protocols of optical burst switching, burst encapsulation and its application in IP backbone networks. It also points out many problems to be solved before this technology is applied.