Monolithic CMOS-compatible zero-index metamaterials.
Opt Express
; 25(11): 12381-12399, 2017 May 29.
Article
em En
| MEDLINE
| ID: mdl-28786594
ABSTRACT
Zero-index materials exhibit exotic optical properties that can be utilized for integrated-optics applications. However, practical implementation requires compatibility with complementary metallic-oxide-semiconductor (CMOS) technologies. We demonstrate a CMOS-compatible zero-index metamaterial consisting of a square array of air holes in a 220-nm-thick silicon-on-insulator (SOI) wafer. This design supports zero-index modes with Dirac-cone dispersion. The metamaterial is entirely composed of silicon and offers compatibility through low-aspect-ratio structures that can be simply fabricated in a standard device layer. This platform enables mass adoption and exploration of zero-index-based photonic devices at low cost and high fidelity.
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MEDLINE
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En
Ano de publicação:
2017
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Article