レーザー解説
周期状分極反転を用いた波長変換デバイスと光通信応用
2004 年 32 巻 3 号 p. 154-159
詳細
2004 年 32 巻 3 号 p. 154-159
Recent progress in waveguide-type quasi-phase matched (QPM) nonlinear-optic wavelength conversion devices is reviewed with emphasis on research work of the author's group. A new technique for forming periodic domain-inverted structures in optical-damage-resistant MgO:LiNbO3 crystal is presented. Improvements of conversion efficiencies of QPM second-harmonic generation (SHG) and difference-frequency generation (DFG) devices are demonstrated. Experimental works toward applications to photonic network systems are reviewed, including those with the cascaded SHG-DFG wavelength conversion as well as the fundamental DFG wavelength conversion.
