Soliton-based optical communications: an overview

摘要

Multiterabit/s, ultrahigh-speed optical transmissions over severalnthousands of kilometers on fibers are becoming reality. Most usenreturn-to-zero (RZ) format, only stable waveform in the presence ofnfiber Kerr nonlinearity and dispersion in an all-optical transmissionnline with loss compensated by periodic amplifications. The nonlinearnSchrodinger equation, assisted by the split-step numerical solutions, isncommonly used as the master equation to describe the informationntransfer in optical fibers. All these facts are the outcome of researchnon optical solitons in fibers in spite of the fact that the commonlynused RZ format is not always called a soliton format. The overviewnpresented here attempts to incorporate the role of soliton-basedncommunications research on present-day ultrahigh-speed communications