Space Division Multiplexing in Optical Communication Systems : Extremely Advanced Optical Transmission with 3M Technologies This book presents new frontiers in data communication. To transcend the physical limitations of current optical communication technologies totally new multiplexing schemes beyond TDM WDM novel transmission optical fibers handling well above Pbit s capacity and next generation optical submarine cable systems will need to be developed. The book offers researchers working at the forefront as well as advanced Ph.D. students in the area of optical fiber communications systems and related fields an essential guide to state of the art optical transmission technologies. It explores promising new technologies for the exabit era; namely the three “M technologies”: multi level modulation multi core fiber and multi mode control. Introduction Optical Fibers for Space Division Multiplexing Optical Connection Technologies Optical Amplification Technologies Optical Transmission Technologies.