Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/336066
Type: Artigo
Title: Design of a compact CMOS-compatible photonic antenna by topological optimization
Author: Pita, J. L.
Aldaya, I.
Dainese, P.
Hernandez-Figueroa, H. E.
Gabrielli, L. H.
Abstract: Photonic antennas are critical in applications such as spectroscopy, photovoltaics, optical communications, holography, and sensors. In most of those applications, metallic antennas have been employed due to their reduced sizes. Nevertheless, compact metallic antennas suffer from high dissipative loss, wavelength-dependent radiation pattern, and they are difficult to integrate with CMOS technology. All-dielectric antennas have been proposed to overcome those disadvantages because, in contrast to metallic ones, they are CMOS-compatible, easier to integrate with typical silicon waveguides, and they generally present a broader wavelength range of operation. These advantages are achieved, however, at the expense of larger footprints that prevent dense integration and their use in massive phased arrays. In order to overcome this drawback, we employ topological optimization to design an all-dielectric compact antenna with vertical emission over a broad wavelength range. The fabricated device has a footprint of 1.78 mu m x 1.78 mu m and shows a shift in the direction of its main radiation lobe of only 4 degrees over wavelengths ranging from 1470 nm to 1550 nm and a coupling efficiency bandwidth broader than 150 nm.
Subject: Antenas óticas
Silício
Optical antennas
Silicon
Country: Estados Unidos
Editor: Optical Society of America
Rights: aberto
Identifier DOI: 10.1364/OE.26.002435
Address: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-3-2435
Date Issue: 2018
Appears in Collections:IFGW - Artigos e Outros Documentos

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