All-optical modulation of four-wave mixing in an Rb-filled photonic bandgap fiber.
We demonstrate efficient all-optical modulation using Rb vapor confined to a hollow-core photonic bandgap fiber. The intensity of a signal field participating in the four-wave-mixing process is modulated using a weak switching field. We observe 3 dB of attenuation in the signal field with only 3600 photons of switching energy, corresponding to 23 photons per atomic cross section lambda(2)/(2pi). Modulation bandwidths as high as 300 MHz are observed.
Venkataraman
Vivek
V
School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA. vv49@cornell.edu
Londero
Pablo
P
Bhagwat
Amar R
AR
Slepkov
Aaron D
AD
Gaeta
Alexander L
AL