[13p-2S-1~15] 3.15 シリコンフォトニクス

▲ [13p-2S-13] Wavelength conversion in the Ta₂O₅ based submicron channel waveguide

Chung-Lun Wu¹, Yi-Jen Chiu¹, Cong-Long Chen¹, Yuan-Yao Lin¹, Ann-Kuo Chu¹, 〇Chao-Kuei Lee¹ (1.Department of Photonics, National Sun Yat-sen University)

キーワード：Ta2O5,Four-wave-mixing

Four-wave-mixing in optical communication region has been successfully demonstrated by using the Ta₂O₅ based submicron channel waveguide. The geometrical dimension of Ta₂O₅ core is 700´400 nm². The ultra-low propagation loss of 1.5 dB/cm in the Ta₂O₅ based channel waveguide enables the high power propagating in the core layer. Based on the continuous wave pump-probe measurement at pump/probe wavelengths of 1555.373/1556.08 nm, the converted signals of 1554.667/1556.787 nm via FWM processing in the Ta₂O₅ based channel waveguide are observed. The conversion efficiency of -49 dB is determined, and the calculated nonlinear refractive index is 1.5±0.6´10^-14 cm²/W at ~1550 nm. Our primarily results indicate that the nonlinear optical property of Ta₂O₅ is comparable to Si₃N₄, and shows great potentials in the nonlinear waveguide applications.