40GHz铌酸锂电光调制器

40 GHz LiNbO_3 Electro-optic Modulators

本文遵循减小损耗的思路 ,提出了复合电极的结构 ,设计制做了这种电极结构的调制器并进行了分析。实验测得微波传输损耗系数α0 <0 .3 d B/ [cm ( GHz) 1 /2 ],在 2 9～ 3 8GHz内相对调制指数变化约3 .5 d

To decrease the microwave propagation loss,the complex electrodes are designed and discussed by using the finite element method (FEM).The modulators are fabricated and measured.The attenuation coefficient α 0 is less than 0.3 dB/[cm(GHz) 1/2 ].The relative modulation index changes about 3.5 dB at the wave band from 29 GHz to 38 GHz.