Optical back propagation for compensating nonlinear impairments in fiber optic links with ROADMs

Maximizing Optical Power Throughput in Long Fiber Optic Links

Analysis of Ultra-short Pulse Propagation in Nonlinear Optical Fiber

Ultra-short pulse is a promising technology for achieving ultra-high data rate transmission which is required to follow the increased demand of data transport over an optical communication system. Therefore, the propagation of such type of pulses and the effects that it may suffer during its transmission through an optical waveguide have received a great deal of attention in the recent years. O...

Modeling and Analysis of the Effects of Impairments in Fiber Optic Links

Electrical Engineering (ABSTRACT) In digital communication systems, several types of impairments may be introduced to the signal. These impairments result in degraded system performance; for example, high bit-error-rate or power penalty. For optical communication systems, in this thesis, these impairments are categorized into four types; that is, thermal noise, shot noise, signal-dependent nois...

Noise in Fiber Optic Communication Links

The physics of noise in optical communication links is of great interest in the design of fiber optic communication systems. In this report the role of noise in optical communications, and how it can limit the performance of optical communications systems, will be examined. The origins of noise in the various optical and analog electronic components will be discussed, and a methodology for a “n...

Combined Precoding and Volterra Equalization for the Mitigation of Fiber-Optic Nonlinear Channel Impairments

We investigate the performance of a combined Tomlinson-Harashima precoding (THP) and a Volterra nonlinear equalization (VNLE) in a nonlinear fiber-optic communication system aiming at a data rate of 100 Gbits/sec. THP-VNLE is compared with a feed-forward VNLE and a combined VNLE decision-feedback equalizer (DFE) by means of performance and computational complexity. Two different transmission sc...