Richard Epworth

Simple criterion for the characterization of nonlinear impairments in dispersion-managed optical transmission systems

We report a novel simple metric for the characterization of nonlinear impairments for both single-channel and wavelength-division-multiplexed dispersion-managed transmission systems. We show that transmission lines having identical nonlinear diffusion bandwidth lead to similar nonlinear degradation.

Analytical model for the design of multispan DWDM transmission systems

We present a novel analytical model to characterize the nonlinear impairments in dispersion-managed amplitude-modulated dense wavelength-division-multiplexing systems. Though this top-down approach is less accurate than numerical simulations, it enables the definition of general rules for the design of transmission lines, which are modulation format and bit-rate independent.

On the spectral information distribution in optical fibres

A revision of the traditional way of looking at the spectral distribution of the information in optical fibres is proposed. General design rules for the design of high capacity transmission systems are reported.

Top-down analysis of high capacity optical transmission systems

Simple analytical models for a fundamental analysis of optical transmission systems are presented, leading to general results concerning issues like dispersion map, spectral efficiency and system granularity. These insights are applicable to a wide range of high capacity transmission systems.