Manipulation of spontaneous emission in a tapered photonic crystal fibre.
We characterize the spontaneous emission of dye that is introduced into the central core of a tapered photonic crystal fiber. Since the photonic crystal period in the fibre cladding varies along the taper, the transmission and spontaneous emission spectra over a wide range of relative frequencies can be observed. The spontaneous emission spectra of the fibre transverse to the fiber axis show suppression due to partial band-gaps of the structure, and also enhancement of spontaneous emission near the band edges. We associate these with van Hove features, as well as finite cluster size effects.
Myers
S J
SJ
Fussell
D P
DP
Dawes
J M
JM
Mägi
E
E
McPhedran
R C
RC
Eggleton
B J
BJ
de Sterke
C Martijn
CM