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Details

Details

  • Nationality

    Portugal
  • Centre

    Applied Photonics
  • Contacts

    +351220402301
    ariel.guerreiro@inesctec.pt
003
Publications

2022

Tunable Plasmonic Resonance Sensor Using a Metamaterial Film in a D-Shaped Photonic Crystal Fiber for Refractive Index Measurements

Authors
Cardoso, MP; Silva, AO; Romeiro, AF; Giraldi, MTR; Costa, JCWA; Santos, JL; Baptista, JM; Guerreiro, A;

Publication
APPLIED SCIENCES-BASEL

Abstract
Subwavelength cells of metallic nanorods arrayed in a dielectric background, termed “metamaterials”, present bulk properties that are useful to control and manipulate surface plasmon resonances. Such feature finds tremendous potential in providing a broad manifold of applications for plasmonic optical sensors. In this paper, we propose a surface-plasmon-resonance-based sensor with spectral response tunable by the volume fraction of silver present in a metamaterial layer deposited on a D-shaped photonic crystal fiber. Using computational simulations, we show that sensitivity and resolution can be hugely altered by changing the amount of constituents in the metamaterial, with no further modifications in the structure of the sensor. Moreover, the designed sensor can also be applied to label the average volume fraction of silver in the metamaterial layer and then to estimate its effective constitutive parameters.

2022

Nematic Liquid Crystals as a Tabletop Platform for Studying Turbulence

Authors
Ferreira, TD; Silva, NA; Guerreiro, A;

Publication
U.Porto Journal of Engineering

Abstract
Light propagating in nonlinear optical materials opens the possibility to emulate quantum fluids of light with accessible tabletop experiments by taking advantage of the hydrodynamical interpretation. In this context, various optical materials have been studied in recent years, with nematic liquid crystals appearing as one of the most promising ones due to their controllable properties. Indeed, the application of an external electric field can tune their nonlocal response, and this mechanism may be useful for producing fluids of light and developing optical analogues. In this work, we extend the applicability of nematic liquid crystal to support optical analogues and study the possibility of emulating turbulent phenomena by using two fluids of light. These fluids interact with each other through the nonlinearity of the medium and generate instabilities that will lead to turbulent regimes. We also explore the possibility of exciting turbulent regimes through the decay of dark soliton stripes. The preliminary results are presented.

2021

Exploring quantum-like turbulence with a two-component paraxial fluid of light

Authors
Silva, NA; Ferreira, TD; Guerreiro, A;

Publication
NONLINEAR OPTICS AND APPLICATIONS XII

Abstract

2021

Reservoir computing with solitons

Authors
Silva, NA; Ferreira, TD; Guerreiro, A;

Publication
NEW JOURNAL OF PHYSICS

Abstract

2021

Hardware-neutral tools for the exploration of optical phenomena in near-resonant atomic systems

Authors
Silva, NA; Ferreira, T; Guerreiro, A;

Publication
INTERNATIONAL JOURNAL OF MODERN PHYSICS C

Abstract

Supervised
thesis

2021

State Estimation for Evolving Power Systems Paradigms

Author
Gil da Silva Sampaio

Institution
UP-FEUP

2018

Automatic Habitat Mapping using Machine Learning

Author
André Filipe Costa Diegues

Institution
UP-FCUP

2018

Dosimetric Effects of Clinical Setup Mismatch in Volumetric Modulated Arc Therapy as Assessed by Monte Carlo Methods

Author
Ricardo José Pires Magalhães

Institution
UP-FCUP

2018

Solving the Time-Independent Generalised Nonlinear Schrödinger Equation using Deep Learning

Author
Inês Sofia Carneiro Madureira

Institution
UP-FCUP

2018

Light manipulation and optical imaging through complex media

Author
Rui Luís Vieira Oliveira

Institution
UP-FCUP