Chinese Journal of Lasers, Volume. 31, Issue 3, 318(2004)
Analysis of Ridge-Type LiNbO3 Optical Waveguide Modulators with the Extended Point-Matching Method
The point-matching method is extended to analyze a travelling-wave electrode structure for ridge-type LiNbO 3 optical modulators. The potential function is expended in terms of a Fourier sine series, and the coefficients of the series are obtained by satisfying the boundary conditions in the contact plane at a finite, discrete set of pints. The calculated fields are used to estimate the characteristic impedance and microwave effective index. This method provides a simple and fast approach to the quasi-static analysis of the multi-layered structures with finite electrode thickness. The results agree well with those obtained using the finite-element method. Some significant conclusions are made for design and optimization of modulators.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Analysis of Ridge-Type LiNbO3 Optical Waveguide Modulators with the Extended Point-Matching Method[J]. Chinese Journal of Lasers, 2004, 31(3): 318