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A New Approach of Hetero-Cladding Using Ferroelectric BaTiO3 and SiO2 for Design of Compact Si Photonic Tunable Directional Coupler

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posted on 2021-03-17, 12:15 authored by MADHUSUDAN MISHRA, Nikhil DasNikhil Das

Abstract— The present work proposes a new approach of hetero-cladding for silicon photonic directional couplers and outlines its contributions towards realization of a compact, tunable and energy efficient directional coupler. The proposed hetero-cladding comprises ferroelectric BaTiO3 (BTO) and SiO2, to control the evanescent mode within the structure. The results show very small and identical coupling length for both TE and TM modes with reduced device cross-section, which promises for a huge reduction in the footprint of both conventional and programmable photonic integrated circuits (PICs). The proposed concept could also be utilized to design compact, low loss and energy efficient phase shifters and other types of couplers.


Department of Science and Technology (DST), Govt. of India, INSPIRE Fellowship program (Grant IF150280)


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Submitting Author's Institution

University of Calcutta, Dept. of Radio Physics and Electronics

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  • India

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