Fundamental-mode cutoff in a photonic crystal fiber with a depressed-index core.
We report a photonic crystal fiber with a depressed-index core doped with fluorine. The effective index of the cladding matches that of the core at an antiguiding wavelength, below which the fiber does not guide light at all.
Mangan
B J
BJ
Arriaga
J
J
Birks
T A
TA
Knight
J C
JC
Russell
P S
PS