Title :
Principles and Applications of Nonlinear Optical Elements in Fiber Optics Code Division Multiple Access Networks (FO-CDMA)
Author :
Salehi, J.A. ; Brackett, C.A.
Author_Institution :
Bell Communications Research, Morristown, New Jersey 07960 USA
Abstract :
In this paper we introduce, for the first time, the use of nonlinear optical elements in fiber optics code division multiple access (FO-CDMA) networks using optical orthogonal codes, newly invented sets of orthogonal codes for positive systems, with desired auto- and cross correlation properties. Specifically, we consider a class of nonlinear optical elements in which their nonlinearities are achieved only as a result of their input light intensity. We use optical orthogonal codes to demonstrate the principles and advantages (e.g., reducing the interference signal´s intensity) of nonlinear optical elements in FO-CDMA environment. Then, system performance based on optical orthogonal codes and nonlinear optical elements in FO-CDMA is analyzed. For example, we show that, for an error rate of 10¿10, FO-CDMA networks with nonlinear optical elements can accommodate 5 times as many more users w.r.t. FO-CDMA networks without the nonlinear optical elements.
Keywords :
Fiber nonlinear optics; High speed optical techniques; Multiaccess communication; Nonlinear optics; Optical devices; Optical fiber networks; Optical fibers; Optical filters; Optical receivers; Optical signal processing;
Conference_Titel :
Military Communications Conference - Crisis Communications: The Promise and Reality, 1987. MILCOM 1987. IEEE
Conference_Location :
Washington, DC, USA
DOI :
10.1109/MILCOM.1987.4795338