PROJECT TITLE :

Millimeter-Wave Radio Over Fiber Optical Upconversion Techniques Relying on Link Nonlinearity

ABSTRACT:

A study of advanced upconversion techniques utilized in radio over fiber (ROF) is provided. With the massive increase in both the amount of wireless Communication subscribers and therefore the bandwidth required per customer, migrating to higher frequencies, i.e., from lower radio frequency to millimeter-wave carriers, is an essential solution. But, thanks to the short propagation range of millimeter waves, a giant variety of radio access points are required for providing reliable coverage, that would increase the infrastructure costs. Hence, the transmission of RF signals between the central (or management) points and radio access points (or remote antenna units) using optical fibers is one among the key access network solutions that have been proposed for future high-bandwidth wireless communication systems. In this paper, we tend to introduce the basics of ROF communication, including optical modulation, the optical channel, and also the optical detection techniques. Then we survey the family of advanced optical upconversion techniques that exploit the nonlinearity of the ROF link. Specifically, we describe how optical upconversion will be achieved by exploiting the Mach-Zehnder modulator's nonlinearity, wavelength conversion techniques, or the photodetector's nonlinearity. The wavelength conversion techniques rely on the nonlinearities present within the fiber, within the optical amplifier, or in the electroabsorption modulator.