Journal
LASER & PHOTONICS REVIEWS
Volume 6, Issue 5, Pages 684-689Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/lpor.201280022
Keywords
BiFeO3; multiferroelectric; optical modulator; plasmonics
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Funding
- Institute of High Performance Computing, Agency of Science Technology And Research (A*STAR) [A*STAR-SERC 0921540098]
- Department of Energy, Basic Energy Sciences, Materials Sciences and Engineering Division
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First principles calculations of electronic and optical properties of multiferroic oxide BiFeO3 are used in combination with a plasmonic device model of optical switch to show that a BiFeO3 based device can have much better performance than devices based on existing materials. This arises from the combination of octahedral tilts, ferroelectricity and G-type antiferromagnetism in BiFeO3 leading to a strong dependence of the optical refractive indices on the orientation with respect to the polarization. A prototype of a plasmonic resonator with an R-BFO thin film layer is used as an example and shows excellent switch and modulation responses. The proposed approach provides potential opportunities to develop high performance nanophotonic devices for optical communication.
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