Robust photonic band gaps for hollow core guidance in PCF made from high index glass.
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.
Pottage
J
J
Bird
David
D
Hedley
T
T
Knight
J
J
Birks
T
T
Russell
P
P
Roberts
P
P