A degenerate four-wave-mixing (FWM) operation in the Ta2O5 submicrometer channel waveguide has been successfully demonstrated. The propagation loss of 1.5 dB/cm and total insertion loss of 5.1 dB are realized in a 12.6 mm long waveguide with inverse taper structure. The wavelength and quadratic pumping power-dependent measurements on optical transmission confirm FWMperformance and characterize the nonlinearity of waveguide. The conversion efficiency of -50 dB at coupled pump power of 40 mW is observed, suggesting that the nonlinear refractive index of Ta2O5 waveguide at 1550 nm is estimated to be 1 x 10(-14) cm(2)/W. Our primary results indicate that the Ta2O5 submicrometer channel waveguide has great potential in developing nonlinear waveguide applications. (C) 2015 Optical Society of America
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机译：Ta2O5亚微米通道波导中的简并四波混频（FWM）操作已得到成功证明。在具有反锥结构的12.6 mm长的波导中，实现了1.5 dB / cm的传播损耗和5.1 dB的总插入损耗。取决于波长和二次泵浦功率的光传输测量结果证实了FWM性能并表征了波导的非线性。在耦合泵浦功率为40 mW时观察到-50 dB的转换效率，这表明Ta2O5波导在1550 nm处的非线性折射率估计为1 x 10（-14）cm（2）/ W。我们的主要结果表明，Ta2O5亚微米通道波导在开发非线性波导应用方面具有巨大潜力。 （C）2015年美国眼镜学会
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