Department of Electrical and Computer Engineering, Yokohama National University
Department of Electrical and Computer Engineering, Yokohama National University
Department of Electrical and Computer Engineering, Yokohama National University
抄録
We report on the fabrication of chalcogenide glass (Ag-As_2Se_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 1.5π through self-phase modulation is observed at 0.78W input peak power in a 400μm long device. The effective nonlinear parameter γ_eff estimated from this result reaches 2.6×10^4 W^-1m^-1 Fourwave 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.
Fabrication and characterization of chalcogenide glass photonic crystal waveguides
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