title: All-optical modulation of four-wave mixing in an Rb-filled photonic bandgap fiber.
abstract: 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.
authors.affiliation: School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA. vv49@cornell.edu
authors.forename: Vivek
authors.initials: V
authors.lastname: Venkataraman
authors.forename: Pablo
authors.initials: P
authors.lastname: Londero
authors.forename: Amar R
authors.initials: AR
authors.lastname: Bhagwat
authors.forename: Aaron D
authors.initials: AD
authors.lastname: Slepkov
authors.forename: Alexander L
authors.initials: AL
authors.lastname: Gaeta