Novel design of Z-cut lithium niobate electrooptic modulator

T. Gorman; S. Haxha

doi:10.1117/12.781399

14 May 2008 Novel design of Z-cut lithium niobate electrooptic modulator

T. Gorman, S. Haxha

Proceedings Volume 6992, Micro-Optics 2008; 699219 (2008) https://doi.org/10.1117/12.781399
Event: SPIE Photonics Europe, 2008, Strasbourg, France

Abstract

Analysis and optimisation of ultra-high-speed Z-cut lithium niobate (LN) electrooptic modulator, operating at a high frequency region, by using full wave finite element numerical technique has been demonstrated. Investigation of the effects of adjusting the buffer layer thickness, the electrode height and the waveguide trapezoidal profile on the microwave effective index (N_m), the characteristic impedance (Ζ_c), the microwave losses (α_c) and the half-wave voltage-length product (V_πL) has been reported. Optimisation of the above parameters yield to a novel design of LN modulator with a low V_πL and high bandwidth operating at a frequency range between 1-100 GHz. The frequency dependent dispersion of the key device parameters with aim to determine the device suitability for high speed operation has been demonstrated.

Citation Download Citation

T. Gorman and S. Haxha "Novel design of Z-cut lithium niobate electrooptic modulator", Proc. SPIE 6992, Micro-Optics 2008, 699219 (14 May 2008); https://doi.org/10.1117/12.781399

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