Journal
IEEE ACCESS
Volume 8, Issue -, Pages 114135-114142Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2020.3002767
Keywords
Optical fiber dispersion; Optical fiber communication; Laser beams; Optical fiber polarization; Supercontinuum generation; Supercontinuum generation; optical vortex; nonlinear optics; fiber
Categories
Funding
- National Key Research and Development Program of China [2019YFB1803700, 2018YFB0703500, 2018YFB0504400]
- National Natural Science Foundation of China (NSFC) [11774181, 61775107, 11874226]
- Fundamental Research Funds for the Central Universities, Nankai University [63191511]
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In this work, we design and simulate an air-core As2S3 ring fiber for high-order orbital angular momentum (OAM) supercontinuum generation. We show that the chromatic dispersion of the ring fiber can be substantially tailored by proper optimization of the air-core radius. Two-octave supercontinuum carrying OAM(17,1) mode, spanning from 1560 to 6250 nm, is obtained by pumping a 50-fs 100-kW secant hyperbolic pulse centered at the wavelength of 3800 nm into the designed fiber with 50-mu m air-core radius and 1-mu m ring width. We further engineer the chromatic dispersion of some other OAM modes and perform simulations of supercontinuum spectra using different kilowatt-level peak power, which indicates that the fiber we design represents a promising avenue for supercontinuum generation of all the OAM(l,1) modes (|l| <= 17). The proposed fiber is suitable for the transmission of OAM beams in infrared wavelength range and it could promote the development and application of high-order OAM beams.
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