Asobe Masaki, Yagi Daiki, Kawabata Yuki, Umeki Takeshi, Enbutsu Koji, Kazama Takushi, Kasahara Ryoichi
Opt Express. 2022 Mar 14;30(6):9473-9481. doi: 10.1364/OE.453578.
Optical parametric amplification in the range of 1.3-1.8 µm was demonstrated by using a periodically poled LiNbO (PPLN) waveguide as a nonlinear medium by varying the detuning of the pump wavelength. A wide range of detuning was enabled by using a multiple-quasi-phase-matched (M-QPM) LiNbO waveguide for pump generation through second harmonic generation (SHG) and temperature control of the PPLN waveguide. Broadband optical amplification and wavelength conversion through difference frequency generation (DFG) are considered useful for widening the bandwidth of optical communication.
通过使用周期性极化铌酸锂（PPLN）波导作为非线性介质，通过改变泵浦波长的失谐，实现了1.3 - 1.8 µm范围内的光学参量放大。通过使用多准相位匹配（M-QPM）铌酸锂波导通过二次谐波产生（SHG）产生泵浦并对PPLN波导进行温度控制，实现了宽范围的失谐。通过差频产生（DFG）进行宽带光放大和波长转换被认为对拓宽光通信带宽很有用。
