Optical Communication Theory and Techniques
Edition: 1 edition
Publisher: Springer
Published: October 21, 2004
Language: eng
Format: Hardcover
Number of pages: 216
ISBN-13: 9780387231327
Subjects: Computer Communications & Networking; Computers; Technology & Industrial Arts; Computer Books: General; Imaging Systems; Information Theory; Networking - General; Computers / Networking / General; Computers : Information Theory; Computers : Networking - General; Technology / Imaging Systems; Congresses; Optical communications
First sentence: The nonlinear Schrödinger equation governs the propagation of the optical field complex envelope v(z, t) in a single-mode fiber [ 1 ].
Description: Since the advent of optical communications, a greattechnological effort has been devoted to the exploitation of the huge bandwidth of optical fibers. Sta- ing from a few Mb/s single channel systems, a fast and constant technological development has led to the actual 10 Gb/s per channel dense wavelength - vision multiplexing (DWDM) systems, with dozens of channels on a single fiber. Transmitters and receivers are now ready for 40 Gb/s, whereas hundreds of channels can be simultaneously amplified by optical amplifiers. Nevertheless, despite such a pace in technological progress, optical c- munications are still in a primitive stage if compared, for instance, to radio communications: the widely spread on-off keying (OOK) modulation format is equivalent to the rough amplitude modulation (AM) format, whereas the DWDM technique is nothing more than the optical version of the frequency - vision multiplexing (FDM) technique. Moreover, adaptive equalization, ch- nel coding or maximum likelihood detection are still considered something “exotic” in the optical world. This is mainly due to the favourable char- teristics of the fiber optic channel (large bandwidth, low attenuation, channel stability, ...), which so far allowed us to use very simple transmission and detection techniques.