Optimization of Multi-Core Fiber Structure for Enhancing Capacity and Reducing Inter-Channel Optical Crosstalk
Year: 2026
Type: article
Abstract: With the ever-growing demand for bandwidth in next-generation communication networks, multi-core fibers (MCFs) have emerged as one of the most promising solutions for increasing data transmission capacity. Nevertheless, inter-core crosstalk remains the principal challenge in the path toward optimal exploitation of this technology. This paper aims to examine and analyze optimization approaches for the geometric structure and constituent materials of multi-core fibers in order to enhance transmission capacity and reduce inter-channel optical crosstalk. The research methodology employed is analytical-descriptive, based on library studies and a review of authoritative scientific literature in the fields of photonics and optical communications. The findings indicate that the application of trench-assisted structures, targeted core heterogeneity, and refractive index profile optimization can substantially reduce crosstalk levels. Furthermore, the integration of evolutionary optimization algorithms with post-transmission digital signal processing techniques enables the achievement of higher capacity density in space-division multiplexing (SDM) systems. The results suggest that selecting an appropriate geometric arrangement and precisely engineering the structural parameters of the cores plays a decisive role in the overall fiber performance, and constitutes a foundational step toward the development of ultra-high-speed communication networks such as 6G.
Author: Rahneshin, Fazeleh
Language: Persian
Topic: Optical Network Technologies
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7170268225