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- Title
Broadband supercontinuum generation in different lattices of As<sub>2</sub>Se<sub>3</sub>-photonic crystal fibers with all-normal dispersion and low peak power.
- Authors
Thi, T. Nguyen; Trong, D. Hoang; Van, L. Chu
- Abstract
This paper introduces a new design based on As2Se3 photonic crystal fibers, with the first layer of air holes near the core being removed. Dispersion properties were investigated for fibers with various types of lattice, including circular, square, and hexagonal lattice. Three fibers with a flat, all-normal dispersion, and a low dispersion value are proposed for supercontinuum generation at the same pump wavelength of 5.5 µm. The input pulse has a duration of 180 fs and a low peak power of 2.778 kW propagating in 10 cm fibers length, generating supercontinuum spectrums at 30 dB levels of 5.725 µm, 5.348 µm, and 5.936 µm, respectively, for circular, square, and hexagonal lattices. In addition, the fiber with the hexagonal lattice has the highest nonlinear coefficient of 862.654 W−1.km−1 and the lowest confinement loss of 0.137 dB/m, causing the largest bandwidth. The supercontinuum generation with low peak power using optimized PCFs with high nonlinearity and low confinement loss, makes them suitable for many application areas, e.g., the polarization-maintaining, coherent optical communications, nonlinear optics, etc.
- Subjects
SUPERCONTINUUM generation; PHOTONIC crystal fibers; CRYSTAL whiskers; CRYSTAL lattices; NONLINEAR optics; OPTICAL communications; DISPERSION (Chemistry)
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 3, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-023-06043-6