Comparison of Chromatic Dispersion of Circular and Hexagonal Photonic Crystal Fibers with Chloroform-Core

Majlesi Journal of Electrical Engineering

مقاله 8، دوره 16، شماره 3، آذر 2022، صفحه 55-61   

نوع مقاله: Reseach Article

شناسه دیجیتال (DOI): 10.30486/mjee.2022.696507

نویسندگان

Tran Tran Bao Le^{* 1}؛ Oanh Truong Thi Chuyen²؛ Thuy Nguyen Thi³؛ Lanh Chu Van¹

¹Department of Physics, Vinh University, Vinh, Vietnam

²Nguyen Quang Dieu High School for the Gifted, Cao Lanh, Vietnam

³University of Education, Hue University, Hue, Vietnam

چکیده

In this paper, we compare dispersion characteristics of chloroform-core photonic crystal fibers (PCFs) with circular lattice and hexagonal lattice in the case of different air hole diameters. By varying lattice constant Ʌ and filling factor in the first ring d₁/Ʌ, we can easily control chromatic dispersion and achieve three optimal structures for the circular lattice of fibers #CF₁ (Ʌ = 1.0 µm, d₁/Ʌ = 0.65), #CF₂ (Ʌ = 1.0 µm, d₁/Ʌ = 0.7), and #CF₃ (Ʌ = 2.0 µm, d₁/Ʌ = 0.3) and two optimal structures for the hexagonal lattice of fibers #HF₁ (Ʌ = 1.0 µm, d₁/Ʌ = 0.5), #HF₂ (Ʌ = 2.0 µm, d₁/Ʌ = 0.3). At the same structural parameter (Ʌ = 2.0 µm, d₁/Ʌ = 0.3) and the corresponding pumping wavelength, the circular structure has a dispersion smaller by 5.598 ps/mn/km than the hexagonal lattice. #CF₁ has all-normal dispersion with the peak of the dispersion curve asymptote to the zero-dispersion curve which is very suitable for coherent supercontinuum generation (SCG). The #HF₁ structure has a near-zero flat anomalous dispersion in the wide wavelength range from 1.1 µm to 1.4 µm. Our results will be an important premise in choosing a PCF structure to study SCG.

کلیدواژه‌ها

Photonic Crystal Fibers؛ Chloroform؛ Dispersion Characteristic؛ Circular Lattice؛ Hexagonal Lattice

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