Design optimization of Z-cut lithium, niobate electrooptic modulator with profiled metal electrodes and waveguides

Gorman, T. and Haxha, S. (2007) Design optimization of Z-cut lithium, niobate electrooptic modulator with profiled metal electrodes and waveguides. Journal of Lightwave Technology, 25 (12). pp. 3722-3729. ISSN 0733-8724. (The full text of this publication is not available from this repository)

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Abstract

Analysis and optimization of an ultra-high-speed Z-cut lithium niobate (LN) electrooptic modulator, operating at a high-frequency region, by using a full-wave finite-element numerical technique, has been demonstrated. Investigation of the effects of adjusting the buffer lay thickness, the electrode height, the electrode trapezoidal profile, and the waveguide trapezoidal profile on the microwave effective index N-m the characteristic, impedance Z(c) the microwave losses alpha(c) the half-wave voltage-length product V pi L has been reported. Optimization of these parameters yield to a novel design of the LN modulator, with a low V pi L and a high bandwidth, operating at a frequency range between 1 and 100 GHz. The frequency-dependent dispersion of the key device parameters, with the aim of determining the device suitability for high-speed operation, has been demonstrated.

Item Type: Article
Uncontrolled keywords: electrooptic modulator; full wave; integrated optics; lithium niobate (LN); optical communications
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK8300 Optoelectronic devices
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Suzanne Duffy
Date Deposited: 21 Apr 2008 07:57
Last Modified: 14 Jan 2010 14:08
Resource URI: http://kar.kent.ac.uk/id/eprint/2760 (The current URI for this page, for reference purposes)
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