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Domain effects on the electro-optic properties of thin-film barium titanate

Vasudevan, AT and Selvaraja, SK (2023) Domain effects on the electro-optic properties of thin-film barium titanate. In: Optical Materials Express, 13 (4). pp. 956-965.

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Official URL: https://doi.org/10.1364/OME.484836


On-chip electro-optic modulation is essential to realize complex on-chip optical signal processing. Recent developments in thin-film ferroelectric oxide for high-speed electro-optical modulators have gained considerable interest in understanding and correlating the material property with the electro-optic response. Particularly, the effect of thin film, domain orientation, and polling on the electro-optic response is not well understood. In this article, we present the effect of ferroelectric domains of thin-film Barium Titanate on the electro-optic response in a waveguide configuration. We also show the impact of drive electrode orientation with respect to the in-plane polarization angle in a multi-domain structure. Our theoretical findings corroborate the experimental observations in the literature, which substantiate the theoretical framework.

Item Type: Journal Article
Publication: Optical Materials Express
Publisher: Optica Publishing Group (formerly OSA)
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Ferroelectric thin films; Ferroelectricity; Light modulation; Light modulators; Optical signal processing, Domain effects; Electro-optic modulation; Electro-optic properties; Electro-optic response; Ferroelectric oxides; High Speed; On chips; Optical signal-processing; Thin film ferroelectrics; Thin-films, Barium titanate
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 22 May 2023 09:16
Last Modified: 22 May 2023 09:16
URI: https://eprints.iisc.ac.in/id/eprint/81563

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