All optical exchange scheme has been the trend of modern optical network with the development of optical communication system and application of Dense Wavelength-Division Multiplexing (DWDM).

In order to expand the group of ades on communication system with asynchronous code division multiaddress (CDMA), the possibility of using chaotic spreading sequences was researched.

Phase encode spreading optical code division multiplex access (OCDMA) communication system is one of the research focuses in recent years.