Principle of realization of all-optical packet switching systems;

Then it explained the process of information transmission and the protocol of packet switching in this network.

Modern communication system is take place a deep changes It leads to the contention between ATM mainstay network technique based on circuit switching and broadband IP mainstay network technique based on packet switching in the application in wide-area network Compared their layers of technique,gave advices suitable for future development application of communication network in our countr

This paper propsed an idea that the optical network and IP network will develop parallelly for long time, analysed the important meaning of OXC and OADM in the future high speed information network,and pointed out that OXC,OADM,OTDM and OPS represent the development direction of future optical network.