Experimental and numerical analysis of the chromatic dispersion dependence upon the actual profile of small core microstructured fibres

TL;DR

This paper combines experimental measurements and numerical simulations to analyze how the chromatic dispersion in small core microstructured fibers depends on their actual geometrical profile, highlighting high sensitivity to parameter variations.

Contribution

It provides a detailed comparison between FEM calculations and experimental measurements of chromatic dispersion in SCMFs, emphasizing the impact of geometrical variations.

Findings

Excellent agreement between numerical and experimental results

Chromatic dispersion highly sensitive to geometrical parameters

Spectral bandwidth of analysis spans 1.1 to 1.6 micrometers

Abstract

The chromatic dispersion curve of the fundamental mode in small core microstructured fibres (SCMF) is both calculated using a Finite Element Method (FEM) and measured with a low coherence interferometric method. The great sensitivity of the chromatic dispersion to variations of the geometrical parameters of SCMFs (the pitch and the diameter) is pointed out. An excellent agreement is obtained between the numerical and the experimental results over a half micrometer spectral bandwidth [1.1 $\mu$m-1.6 $\mu$m].