Open AccessSingle scatterer Fano resonances in solid core photonic band gap fibers
Author(s) -
P. Steinvurzel,
C. Martijn de Sterke,
M. J. Steel,
Boris T. Kuhlmey,
Benjamin J. Eggleton
Publication year - 2006
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.14.008797
Subject(s) - fano resonance , cladding (metalworking) , optics , refractive index , scattering , core (optical fiber) , photonic crystal , fano plane , materials science , band gap , planar , antiresonance , physics , raman scattering , optoelectronics , raman spectroscopy , plasmon , resonance (particle physics) , atomic physics , mathematics , computer graphics (images) , computer science , pure mathematics , metallurgy
Solid core photonic bandgap fibers (SC-PBGFs) consisting of an array of high index cylinders in a low index background and a low index defect core have been treated as a cylindrical analog of the planar anti-resonant reflecting optical waveguide (ARROW). We consider a limiting case of this model in which the cylinders in the SC-PBGF cladding are widely spaced apart, so that the SC-PBGF modal loss characteristics should resemble the antiresonant scattering properties of a single cylinder. We find that for glancing incidence, the single cylinder scattering resonances are Fano resonances, and these Fano resonances do in fact appear in the loss spectra of SC-PBGFs. We apply our analysis to enhance the core design of SC-PBGFs, specifically with an eye towards improving the mode confinement in the fundamental bandgap.