# Optimal crosstalk suppression in multicore fibers

## TL;DR

This paper introduces a hybrid analytic-numerical approach to optimize core fluctuations in multicore fibers, effectively suppressing crosstalk and enhancing signal integrity in optical communication systems.

## Contribution

It presents a novel method for optimizing core radius fluctuations to minimize power transfer in multicore fibers, validated through numerical simulations.

## Key findings

- Optimized fluctuation parameters significantly reduce crosstalk.
- Numerical experiments confirm the effectiveness of the proposed method.
- The approach is applicable to realistic C-band fiber configurations.

## Abstract

We study propagation in a cyclic symmetric multicore fiber where the core radii randomly fluctuate along the propagation direction. We propose a hybrid analytic-numerical method to optimize the amplitude and frequency of the fluctuations that suppress power transfer between outer and inner cores. Our predictions are confirmed by numerical experiments using finite difference beam propagation methods for realistic C-band fibers.