Coupling Mode of Dual-Core Micro Structured Fibers

TL;DR

This paper investigates the coupling behavior between two cores in microstructured photonic crystal fibers, focusing on mode interactions and crosstalk, which are crucial for understanding multi-core fiber applications.

Contribution

It provides an analysis of inter-core coupling and mode beating effects in dual-core microstructured fibers, advancing understanding of their optical properties.

Findings

Mode beating effects under linear conditions analyzed

Inter-core coupling influences crosstalk in dual-core fibers

Results inform design of multi-core photonic crystal fibers

Abstract

The photonic crystal fibers (PCF) or air-silica microstructured fibers consist of a periodic array of dielectric transverse. By introducing a defect in this structure, it is possible to guide the light by a photonic bandgap effect, whose properties are different fundamentally from the guide by total internal reflection that takes place in conventional fibers. PCF with two cores have significant potential, and this is one of the main motivations witches led us to approach this theme in this article. Analysis of the inter-core coupling was also necessary to study the problem of crosstalk. Their knowledge is important because it is a preliminary work to the study and understanding of multi-core PCF or an array of guides in the microstructured cladding. It then presents the main results on the effects of beating between the various modes under linear conditions.