Open AccessLong period grating resonances in photonic bandgap fiber
Author(s) -
P. Steinvurzel,
Eric D. Moore,
Eric Mägi,
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.14.003007
Subject(s) - optics , materials science , grating , cladding (metalworking) , long period fiber grating , photonic crystal fiber , cladding mode , photonic crystal , coupled mode theory , wavelength , diffraction grating , optoelectronics , optical fiber , refractive index , graded index fiber , fiber optic sensor , polarization maintaining optical fiber , physics , metallurgy
We demonstrate the formation of stress-induced long period gratings (LPGs) in fluid-filled photonic bandgap fiber (PBGF). Based on our experimental results, simulations, and theoretical understanding of LPGs, we identify coupling to a guided LP(11)-like mode of the core and lossy LP1x-like modes of cladding microstructure for a single grating period. The periodic modal properties of PBGFs allow for coupling to the same mode at multiple wavelengths without a dispersion turning point. Simulations identify inherent differences in the modal structure of even and odd bands.