Open AccessAccurate modelling of fabricated hollow-core photonic bandgap fibers
Author(s) -
Eric Numkam Fokoua,
Seyed Reza Sandoghchi,
Yong Chen,
Gregory T. Jasion,
Natalie V. Wheeler,
N. K. Baddela,
J. R. Hayes,
M. N. Petrovich,
David J. Richardson,
Francesco Poletti
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.023117
Subject(s) - materials science , optics , attenuation , core (optical fiber) , photonic crystal fiber , surface roughness , scattering , fiber , scanning electron microscope , finite element method , surface finish , photonic crystal , optoelectronics , composite material , physics , thermodynamics
We report a novel approach to reconstruct the cross-sectional profile of fabricated hollow-core photonic bandgap fibers from scanning electron microscope images. Finite element simulations on the reconstructed geometries achieve a remarkable match with the measured transmission window, surface mode position and attenuation. The agreement between estimated scattering loss from surface roughness and measured loss values indicates that structural distortions, in particular the uneven distribution of glass across the thin silica struts on the core boundary, have a strong impact on the loss. This provides insight into the differences between idealized models and fabricated fibers, which could be key to further fiber loss reduction.