# Overview and Comparison of Nonlinear Interference Modelling Approaches in Ultra-Wideband Optical Transmission Systems

## TL;DR

This paper reviews recent nonlinear interference modelling approaches in ultra-wideband optical systems, comparing their accuracy and computational complexity to guide future research and practical implementation.

## Contribution

It provides a comprehensive overview and comparison of existing nonlinear interference models for ultra-wideband optical transmission systems.

## Key findings

- Current models vary in accuracy and complexity
- Estimation accuracy and computational efficiency are key trade-offs
- Guidelines for selecting models based on system requirements

## Abstract

The recent advances in modelling nonlinear interference of systems operating beyond the C-band are discussed. Estimation accuracy as well as computational complexity of current approaches are compared and addressed.