title: Fabrication and characterization of chalcogenide glass photonic crystal waveguides.
abstract: We report on the fabrication of chalcogenide glass (Ag-As(2)Se(3)) photonic crystal waveguides and the first detailed characterization of the linear and nonlinear optical properties. The waveguides, fabricated by e-beam lithography and ICP etching exhibit typical transmission spectra of photonic crystal waveguides, and exhibit high optical nonlinearity. Nonlinear phase shift of 1.5pi through self-phase modulation is observed at 0.78 W input peak power in a 400 microm long device. The effective nonlinear parameter gamma(eff) estimated from this result reaches 2.6 x 10(4) W(-1)m(-1). Four-wave mixing is also observed in the waveguide, while two-photon absorption at optical communication wavelengths is sufficiently small and the corresponding figure of merit is larger than 11.
authors.affiliation: Department of Electrical and Computer Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan.
authors.forename: Keijiro
authors.initials: K
authors.lastname: Suzuki
authors.forename: Yohei
authors.initials: Y
authors.lastname: Hamachi
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Baba
mesh_terms: D018011:Chalcogens / Q000737:chemistry*; D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005898:Glass / Q000737:chemistry*; D008027:Light; D055096:Optical Devices; D017785:Photons; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation
chemical_list: D018011:Chalcogens