Dispersion Optimization in GeO2-doped Silica Photonic Crystal Fibers with Circular Lattice

Nguyen Thi, Thuy

doi:10.30486/mjee.2023.1977591.1057

Document Type : Reseach Article

Author

Thuy Nguyen Thi

University of Education, Hue University 34 Le Loi, Hue city, Viet nam

https://doi.org/10.30486/mjee.2023.1977591.1057

Abstract

In this paper, we analyze the dispersion properties of photonic crystal fiber with the core replaced by a composite of 85% SiO₂-15% GeO₂. The air hole's radii of the layers in the cladding are designed differently to improve the dispersion and nonlinear properties of the fibers. Both anomalous and all-normal dispersions have been optimized. Based on numerical simulation results, two optimal structures (d₁/Ʌ = 0.4, Ʌ = 0.9 µm and d₁/Ʌ = 0.45 and Ʌ = 1.0 µm) are proposed with a very small dispersion value of 0.298 ps/ nm.km and −0.311 ps/nm.km at the pump wavelength of 1.53 µm and 0.985 µm, respectively. The high nonlinear coefficient, small effective mode area, and very low attenuation of about 10⁻⁷ dB/m at the pump wavelength are also favorable conditions for the application of broad-spectrum supercontinuum with low peak power. The proposed fibers can be new supercontinuum sources that effectively replace glass core fibers.

Keywords

References

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Dispersion Optimization in GeO2-doped Silica Photonic Crystal Fibers with Circular Lattice

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Volume 17, Issue 2June 2023Pages 57-67

Volume 17, Issue 2
June 2023
Pages 57-67