绝缘体上掺铒铌酸锂放大器建模与实验研究

Modeling and Experimental Investigation of Erbium-Doped Lithium Niobate on Insulator Amplifiers

绝缘体上掺铒铌酸锂(Er∶LNOI)因其可以提供高增益而备受关注。对Er∶LNOI波导放大器完成了建模,并建立了对应的能级速率方程。利用该模型对Er∶LNOI波导的增益性能进行了仿真,并与实验进行了对比。当信号波长为1531.5 nm和1550.0 nm时,研究了放大器在980 nm和1484 nm泵浦波长下的净增益,并且通过实验和仿真比较了不同信号功率和泵浦功率下的波导增益。除此之外,还研究了波导长度对放大器增益的影响。

Erbium-doped lithium niobate on insulator(Er∶LNOI)has attracted much attention because of its high gain.The Er∶LNOI waveguide amplifier is modeled and the corresponding energy-level rate equation is established.The gain performance of Er∶LNOI waveguide is simulated by using the model and compared with experiments.The internal net gains of the amplifier at the signal wavelength of 1531.5 nm and 1550.0 nm are studied at 980 nm and 1484 nm pump wavelengths.The waveguide gains with different signal powers and pump powers are compared by experiment and simulation.In addition,the effect of waveguide length on amplifier gain is also investigated.