Dielectric resonator antenna for applications in nanophotonics

Optics Express (Impact Factor: 3.49). 01/2013; 21(1):1234-9. DOI: 10.1364/OE.21.001234
Source: PubMed


Optical nanoantennas, especially of the dipole type, have been theoretically and experimentally demonstrated by many research groups. Likewise, the plasmonic waveguides and optical circuits have experienced significant advances. In radio frequencies and microwaves a category of antenna known as dielectric resonator antenna (DRA), whose radiant element is a dielectric resonator (DR), has been designed for several applications, including satellite and radar systems. In this letter, we explore the possibilities and advantages to design nano DRAs (NDRAs), i. e., DRAs for nanophotonics applications. Numerical demonstrations showing the fundamental antenna parameters for a circular cylindrical NDRA type have been carried out for the short (S), conventional (C), and long (L) bands of the optical communication spectrum.

Download full-text


Available from: Hugo Enrique Hernández Figueroa, Sep 29, 2014
22 Reads
  • Source
    • "However, simulation of optical antennas requires extra care since metals become dispersive in the visible region and need to be modeled with proper dielectric function. While the antenna proposed in [7] was implemented with dielectric resonator, in most cases nanoantennas operating at optical regime works on the principle of plasmonic resonance [1], [9], [15]. Besides these techniques, the concept of hybrid plasmonic structure has also been adopted for designing nano-antennas [6], [17]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we propose a novel hybrid plas-monic waveguide fed broadband optical patch nano-antenna for nanophotonic applications. Through full wave electromagnetic simulation, we demonstrated our proposed antenna to radiate and receive signal at all optical communication windows (e.g. λ = 850nm, 1310nm & 1550nm) with around 86% bandwidth within the operational domain. Moreover numerical results demonstrate that the proposed nano-antenna has directional radiation pattern with satisfactory gain over all three communication bands. Additionally, we evaluated the antenna performances with two different array arrangements (e.g. one dimensional and square array). The proposed broadband antenna can be used for prominent nanophotonic applications such as optical wireless communication in inter and intra-chip devices, optical sensing and optical energy harvesting etc.
    IEEE Photonics Technology Letters 02/2015; 27(10). DOI:10.1109/LPT.2015.2407867 · 2.11 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: A giant field enhancement, respect to the amplitude of the incident wave is achieved in a thin layer lattice with low contrast dielectric, is demonstrated. The key mechanism is a careful control of the parameters, which allows a stabilization of the coupling resonances.
    Proceedings of SPIE - The International Society for Optical Engineering 01/2014; 8995. DOI:10.1117/12.2039741 · 0.20 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Quantum emitters such as NV-centers or quantum dots can be used as single-photon sources. To improve their performance, they can be coupled to microcavities or nano-antennas. Plasmonic antennas offer an appealing solution as they can be used with broadband emitters. When properly designed, these antennas funnel light into useful modes, increasing the emission rate and the collection of single-photons. Yet, their inherent metallic losses are responsible for very low radiative efficiencies. Here, we introduce a new design of directional, metallo-dielectric, optical antennas with a Purcell factor of 150, a total efficiency of 74% and a collection efficiency of emitted photons of 99%.
    Optics Express 02/2014; 22(3):2337-47. DOI:10.1364/OE.22.002337 · 3.49 Impact Factor
Show more