Electrode-source characteristic impedance match of CPW for LiNbO/sub 3/ optical modulators with and without ridge structure

Proceedings of the Eighteenth National Radio Science Conference. NRSC'2001 (IEEE Cat. No.01EX462) Pub Date : 2001-03-27 DOI:10.1109/NRSC.2001.929418

A.A. Aboul-Enien, T. E. Taha, A.A. Abou El-Fal, K.A. Mostafa

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引用次数: 2

Abstract

In this paper, the characteristic impedance (Z/sub c/) analysis of the coplanar waveguide (CPW) for Z-cut Ti:LiNbO/sub 3/ optical modulators with and without ridge structure has been deduced by using the transverse resonance method (TRM), whereas the hybrid-mode analysis is carried out for CPW applicable to these structures. The analysis is based on representation of the structure as a transmission line in the Y-direction. The Maxwell's equations have been used to deduce the field distribution across the structure. Z/sub c/ as a function of the operating frequency is computed. The effect of the structure dimensions on Z/sub c/ is discussed. The microwave electric field distribution as a function of the structure dimensions is plotted. The optical properties of a LiNbO/sub 3/ optical modulator without ridge structure are also computed. Finally, the obtained results are compared with the data furnished by the literature. A good accuracy is obtained.

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带和不带脊结构的LiNbO/sub - 3光调制器CPW的极源特性阻抗匹配

本文采用横向共振方法(TRM)推导了Z-cut Ti:LiNbO/sub - 3/光调制器的共面波导(CPW)的特性阻抗(Z/sub -c /)分析，并对适用于这些结构的共面波导进行了混合模式分析。分析是基于将结构表示为y方向的传输线。麦克斯韦方程组被用来推导出整个结构的场分布。计算了Z/sub c/作为工作频率的函数。讨论了结构尺寸对Z/sub / c/的影响。绘制了微波电场随结构尺寸的分布曲线。计算了无脊结构LiNbO/ sub3 /光调制器的光学特性。最后，将所得结果与文献提供的数据进行了比较。得到了较好的精度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Eighteenth National Radio Science Conference. NRSC'2001 (IEEE Cat. No.01EX462)

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