Open AccessRobust photonic band gaps for hollow core guidance in PCF made from high index glass
Author(s) -
J.M. Pottage,
David M. Bird,
T.D. Hedley,
J.C. Knight,
T.A. Birks,
P.St.J. Russell,
P. J. Roberts
Publication year - 2003
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.11.002854
Subject(s) - photonic crystal , refractive index , optics , photonic crystal fiber , core (optical fiber) , materials science , wavelength , band gap , photonics , optoelectronics , high refractive index polymer , photonic bandgap , physics
We report a new type of photonic bandgap that becomes substantial at remarkably low air-filling fractions (~60%) in triangularlattice photonic crystal fibres (PCF) made from high index glass (n / 2.0). The ratio of inter-hole spacing to wavelength makes these new structures ideal for the experimental realisation of hollow-core PCF in the mid/farinfrared, where suitable glasses (e.g., tellurites and chalcogenides) tend to have high refractive indices.