Bend effect of the electrode for travelling wave integrated electro-optic modulators

• 作 者: 张阜文 陈福深 邱昆
• 机 构: State Key Lab of Broadband Optic Fiber Transmission and Communication Networks, UESTC, Chengdu 61005
• 出 处: Chinese Optics Letters
• 发表日期: 2003年07期
• 关键词: transmission characteristics electrical characteristics finite element method ar

In this paper, we have studied electrode bend effects on electrical characteristics of the modulator in the three aspects, which are arc length, characteristic impedance, and loss, applying the model in Ref. [1] and the finite element method (FEM). The results have shown that the effect only caused by the characteristic impedance is necessarily considered while its deviation is large, but others are negligible as we design a practical device. Finally, some transmission characteristics of coplanar line with different arc length of the bend have been tested, and the measured results are in good agreement with the theoretical analyses.

In this paper, we have studied electrode bend effects on electrical characteristics of the modulator in the three aspects, which are arc length, characteristic impedance, and loss, applying the model in Ref. [1] and the finite element method (FEM). The results have shown that the effect only caused by the characteristic impedance is necessarily considered while its deviation is large, but others are negligible as we design a practical device. Finally, some transmission characteristics of coplanar line with different arc length of the bend have been tested, and the measured results are in good agreement with the theoretical analyzes.