| Texto completo | |
| Autor(es): |
Pita, Julian L.
[1]
;
Aldaya, Ivan
[2, 3]
;
Santana, Octavio J. S.
[2]
;
De Araujo, Luis E. E.
[2]
;
Dainese, Paulo
[2]
;
Gabrielli, Lucas H.
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [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 de Boa Vista, BR-13876750 Sao Paulo, SP - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Optics Express; v. 25, n. 24, p. 30105-30114, NOV 27 2017. |
| Citações Web of Science: | 6 |
| Resumo | |
Phased arrays are expected to play a critical role in visible and infrared wireless systems. Their improved performance compared to single element antennas finds uses in communications, imaging, and sensing. However, fabrication of photonic antennas and their feeding network require long element separation, leading to the appearance of secondary radiation lobes and, consequently, crosstalk and interference. In this work, we experimentally show that by arranging the elements according to the Fermat's spiral, the side lobe level (SLL) can be reduced. This reduction is proved in a CMOS-compatible 8-element array, revealing a SLL decrement of 0.9 dB. Arrays with larger numbers of elements and inter-element spacing are demonstrated through a spatial light modulator (SLM) and an SLL drop of 6.9 dB is measured for a 64-element array. The reduced SLL, consequently, makes the proposed approach a promising candidate for applications in which antenna gain, power loss, or information security are key requirements. (C) 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (AU) | |
| Processo FAPESP: | 08/57857-2 - Fotônica para comunicações ópticas |
| Beneficiário: | Hugo Luis Fragnito |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 15/04113-0 - Não linearidades em Guias de Onda baseados em Silício |
| Beneficiário: | Ivan Aritz Aldaya Garde |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 13/20180-3 - Processos de espalhamento de luz em microestruturas fotônicas |
| Beneficiário: | Paulo Clóvis Dainese Júnior |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |