Wavelength Division Multiplexing in Optical Communication Systems

Abstract

Taking into account parameters of realized components for wavelength division multiplexing systems with multimode graded index fibers, it is shown that such a system has no advantage compared to a single wavelength system operating at an optimum wavelength. We therefore propose a new wavelength division multiplexing system with very small optical frequency separation of some GHz in connection with a single-mode fiber and heterodyne receiver. The components for such a future system can be realized by using integrated optics.