title: Net-gain from a parametric amplifier on a chalcogenide optical chip.
abstract: We report first observation of net-gain from an optical parametric amplifier in a planar waveguide. This was achieved in a low-loss As(2)S(3) planar waveguide, with a strong nonlinearity (gamma approximately 10 /W/m) and tailored anomalous dispersion yielding efficient Raman-assisted four-wave mixing at telecom wavelengths. The experiments were in good agreement with theory, and indicate a peak net-gain greater than +16 dB for the signal and idler (+30 dB neglecting coupling losses) and a broad bandwidth spanning 180 nm.
authors.affiliation: Centre for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), School of Physics, University of Sydney, NSW 2006, Australia.
authors.forename: Michael R E
authors.initials: MR
authors.lastname: Lamont
authors.forename: Barry
authors.initials: B
authors.lastname: Luther-Davies
authors.forename: Duk-Yong
authors.initials: DY
authors.lastname: Choi
authors.forename: Steve
authors.initials: S
authors.lastname: Madden
authors.forename: Xin
authors.initials: X
authors.lastname: Gai
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Eggleton
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008029:Lighting / Q000295:instrumentation*; D008962:Models, Theoretical; D055096:Optical Devices; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*
chemical_list: D018011:Chalcogens