Abstract
This paper presents a novel triangular core fiber designed for single-mode operation, featuring a large mode area of 2178 μm² and optimized for the delivery of ultra-short pulses at a wavelength of 1550 nm. The fiber design demonstrates the ability to transmit ultra-short pulses without distortion, achieving a pulse duration of 100 fs and a peak power of 63.3 kW. Through comprehensive analysis using the Transfer Matrix Method and solving the nonlinear Schrödinger equation via the split-step Fourier method, the fiber's performance was thoroughly evaluated, accounting for factors such as Raman's response and self-steepening. The numerical demonstration reveals successful pulse propagation over a 3.2 m length, with the dispersion length to nonlinear length ratio nearly equal to 1, ensuring the delivery of undistorted pulses. This research presents a significant advancement in fiber optics technology, offering promising prospects for efficient ultra-short pulse transmission in various applications.
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