Optimizing the usable bandwidth and loss through core design in realistic hollow-core photonic bandgap fibers.
The operational bandwidth of hollow-core photonic bandgap fibers (PBGFs) is drastically affected by interactions between the fundamental core mode and surface modes guided at the core-cladding interface. By systematically studying realistic hollow-core PBGFs we identify a new design regime robust in eliminating the presence of surface modes. We present new fiber designs with a fundamental core mode free of anticrossings with surface modes at all wavelengths within the bandgap, allowing for a low-loss operational bandwidth of ~17% of the central gap wavelength.
Amezcua-Correa
Rodrigo
R
Broderick
N G
NG
Petrovich
M N
MN
Poletti
F
F
Richardson
D J
DJ