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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Design of a compact CMOS-compatible photonic antenna by topological optimization

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Author(s):
Pita, Julian L. [1] ; Aldaya, Ivan [2, 3] ; Dainese, Paulo [2] ; Hernandez-Figueroa, Hugo E. [1] ; Gabrielli, Lucas H. [1]
Total Authors: 5
Affiliation:
[1] Univ Campinas UNICAMP, Sch Elect & Comp Engn, BR-13083852 Campinas, SP - Brazil
[2] Univ Campinas UNICAMP, Inst Phys Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[3] State Univ Sao Paulo UNESP, Campus Sao Joao da Boa Vista, BR-13876750 Sao Joao Da Boa Vista, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Optics Express; v. 26, n. 3, p. 2435-2442, FEB 5 2018.
Web of Science Citations: 1
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. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (AU)

FAPESP's process: 15/24517-8 - Photonics for next generation internet
Grantee:Hugo Enrique Hernández Figueroa
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/04113-0 - Nonlinearities in Silicon-based Waveguides
Grantee:Ivan Aritz Aldaya Garde
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 08/57857-2 - Photonics for optical communications
Grantee:Hugo Luis Fragnito
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/20180-3 - Light scattering processes in photonic microstructures
Grantee:Paulo Clóvis Dainese Júnior
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 16/19270-6 - Multimode couplers for integrated photonics
Grantee:Lucas Heitzmann Gabrielli
Support type: Research Grants - Young Investigators Grants