title: All-optical modulation using two-photon absorption in silicon core optical fibers.
abstract: All-optical modulation based on degenerate and non-degenerate two-photon absorption (TPA) is demonstrated within a hydrogenated amorphous silicon core optical fiber. The nonlinear absorption strength is determined by comparing the results of pump-probe experiments with numerical simulations of the coupled propagation equations. Subpicosecond modulation is achieved with an extinction ratio of more than 4 dB at telecommunications wavelengths, indicating the potential for these fibers to find use in high speed signal processing applications.
authors: Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK.
authors: P
authors: P
authors: Mehta
authors: N
authors: N
authors: Healy
authors: T D
authors: TD
authors: Day
authors: J R
authors: JR
authors: Sparks
authors: P J A
authors: PJ
authors: Sazio
authors: J V
authors: JV
authors: Badding
authors: A C
authors: AC
authors: Peacock
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D055100:Optical Fibers; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry*
chemical_list: D012825:Silicon