Performance and implementation complexity of various binary and nonbinary modulation methods with coherent, differentially coherent and noncoherent detection are compared. Nonbinary modulation with coherent detection maximizes spectral efficiency and improves tolerance to transmission impairments, while enabling effective, low-complexity electrical compensation of these impairments.
© 2006 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications
J. Kahn, " Modulation and Detection Techniques for Optical Communication Systems," in Optical Amplifiers and Their Applications/Coherent Optical Technologies and Applications, Technical Digest (CD) (Optical Society of America, 2006), paper CThC1.