Electro-optic grating for LiNbO3 waveguide high-speed modulation

Zhene Xu; Maria Rizzi; Beniamino Castagnolo

doi:10.1117/12.310589

18 June 1998 Electro-optic grating for LiNbO₃ waveguide high-speed modulation

Zhene Xu, Maria Rizzi, Beniamino Castagnolo

Proceedings Volume 3291, Diffractive and Holographic Device Technologies and Applications V; (1998) https://doi.org/10.1117/12.310589
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

A LiNbO₃ electrooptic grating modulator, which has good wavelength selection and high speed characteristics, is composed of coplanar microstrip electrodes with periodic small fins, a thin SiO₂ buffer layer, and airbridge structure. The refractive index distribution in the modulator is analyzed by considering the linear electrooptic effects. The microwave characteristics are determined using 3D finite difference method (3D-FDM). Numerical simulations indicate that the airbridge structure have good speeding wave up effect. The modulator has quite good selecting wavelength modulation characteristics.

Citation Download Citation

Zhene Xu, Maria Rizzi, and Beniamino Castagnolo "Electro-optic grating for LiNbO₃ waveguide high-speed modulation", Proc. SPIE 3291, Diffractive and Holographic Device Technologies and Applications V, (18 June 1998); https://doi.org/10.1117/12.310589

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