Open AccessNanostructured graded-index core chalcogenide fiber with all-normal dispersion–design and nonlinear simulations
Author(s) -
Bartłomiej Siwicki,
Adam Filipkowski,
Rafał Kasztelanic,
Mariusz Klimczak,
Ryszard Buczyński
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.012984
Subject(s) - supercontinuum , chalcogenide , materials science , optics , dispersion (optics) , chalcogenide glass , core (optical fiber) , refractive index , photonic crystal fiber , zero dispersion wavelength , optical fiber , fiber , refractive index profile , fabrication , optoelectronics , plastic optical fiber , wavelength , multi mode optical fiber , physics , composite material , medicine , alternative medicine , pathology
We propose a new approach to developing of graded-index chalcogenide fibers. Since chalcogenide glasses are incompatible with current vapor deposition techniques, the arbitrary refractive index gradient is obtained by means of core nanostructurization by the effective medium approach. We study the influence of graded-index core profile and the core diameter on the fiber dispersion characteristics. Flat, normal dispersion profiles across the mid-infrared transmission window of the assumed glasses are easily obtained for the investigated core nanostructure layouts. Nonlinear propagation simulations enable to expect 3.5-8.5 µm spectrum of coherent, pulse preserving supercontinuum. Fabrication feasibility of the proposed fiber is also discussed.