A systematic approach for designing zero-DGD coupled multi-core optical fibers

TL;DR

This paper introduces an analytical method for designing multi-core optical fibers with zero differential group delay, simplifying the process to algebraic equations and enabling optimized fiber configurations for minimal dispersion.

Contribution

It presents a novel analytical approach that reduces the design of zero-DGD multi-core fibers to solving algebraic equations, improving design efficiency.

Findings

Effective reduction of design problem to algebraic equations

Identification of fiber configurations with minimized intermodal dispersion

Analytical determination of core parameters for zero-DGD fibers

Abstract

An analytical method is presented for designing N-coupled multi-core fibers with zero differential group delay. This approach effectively reduces the problem to a system of N-1 algebraic equations involving the associated coupling coefficients and propagation constants as obtained from coupled mode theory. Once the parameters of one of the cores are specified, the roots of the resulting N-1 equations can then be used to determine the characteristics of the remaining waveguide elements. Using this technique, a number of pertinent geometrical configurations are investigated in order to minimize intermodal dispersion.