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Browsing Elektonik-Elektronik Mühendisliği by Author "Kurt, Hamza"

Browsing Elektonik-Elektronik Mühendisliği by Author "Kurt, Hamza"

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  • Babayigit, Ceren; Kurt, Hamza; Turduev, Mirbek (IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND, 2019)
    This study presents active beam steering and afocal zooming of light by incorporating liquid crystals (LCs) with graded index photonic crystals (GRIN PCs). The GRIN PC structures are composed of low refractive index polymer ...
  • Gailevicius, Darius; Jonusauskas, Linas; Sakalauskas, Danas; Hayran, Zeki; Kurt, Hamza; Turduev, Mirbek; Sakirazanovas, Simas; Juodkazis, Saulius; Mizeikis, Vygantas; Gadonas, Roaldas; Staliunas, Kestutis; Malinauskas, Mangirdas (SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA, 2017)
    In this work we explore a possibility to apply ultrafast 3D laser nanolithography in conjunction with pyrolysis to acquire glass-ceramic 3D structures in micro- and nano-scale. Laser fabrication allows for production of ...
  • Grineviciute, Lina; Babayigit, Ceren; Gailevicius, Darius; Bor, Emre; Turduev, Mirbek; Purlys, Vytautas; Tolenis, Tomas; Kurt, Hamza; Staliunas, Kestutis (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2019)
    We propose and experimentally demonstrate spatial filtering by photonic crystals in a Bragg configuration. Compared to the Laue configuration, where spatial filtering was already demonstrated before, the Bragg configuration ...
  • Bor, Emre; Turduev, Mirbek; Yasa, Utku Gorkem; Kurt, Hamza; Staliunas, Kestutis (AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, 2018)
    In this paper, we present the numerical and experimental demonstration of asymmetric light transmission by a compact photonic crystal (PC) structure, which sustains semi-Dirac cone dispersion. The semi-Dirac point is ...
  • Turduev, Mirbek; Bor, Emre; Yasa, Utku Görkem; Kurt, Hamza (OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA, 2020-04)
    In this Letter, we numerically and experimentally demonstrate the carpet cloaking effect by a rectangular lattice two-dimensional photonic crystal (PC) exhibiting a semi-Dirac cone (SDC) dispersion phenomenon. The proposed ...
  • Bor, Emre; Babayiğit, Ceren; Kurt, Hamza; Staliunas, Kestutis; Turduev, Mirbek (OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA, 2018)
    In this Letter, the design of a directional optical cloaking by a genetic algorithm is proposed and realized experimentally. A three-dimensional finite-difference time-domain method is combined with the genetic optimization ...
  • Hayran, Zeki; Turduev, Mirbek; Gailevicius, Darius; Mizeikis, Vygantas; Juodkazis, Saulius; Malinauskas, Mangirdas; Staliunas, Kestutis; Kurt, Hamza (SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA, 2017)
    In this study, we propose a drop-out mechanism based on the enhanced interaction between a defect waveguide and defect microcavities in three-dimensional chirped woodpile photonic crystals (WPCs). We first show that light ...
  • Gümüş, M.; Giden, İ.H.; Akcaalan, O.; Turduev, Mirbek; Kurt, Hamza (AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA, 2018)
    We propose compact S-vector superprism providing broadband wavelength sensitivity within a/lambda= 0.610-0.635, where "a" is the lattice constant, lambda is the incident wavelength, and S denotes the Poynting vector. The ...
  • Babayiğit, Ceren; Boztuğ, Çiçek; Kurt, Hamza; Turduev, Mirbek (Institute of Electrical and Electronics Engineers Inc., 2020-03)
    In this manuscript, we propose and design two different Fabry-Pérot microtube cavity refractometer configurations operating at mid-infrared (mid-IR) wavelengths. The designed refractometers' topologies are based on ...
  • Yasa, Utku G.; Turduev, Mirbek; Giden, Ibrahim H.; Kurt, Hamza (AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, 2018)
    In this study, realization and applications of anisotropic zero-refractive-index materials are proposed by exposing the unit cells of photonic crystals that exhibit Dirac-like cone dispersion to rotational symmetry reduction. ...
  • Turduev, Mirbek; Şahin, Umut; Bor, Emre; Kurt, Hamza (IEEE Computer Society, 2019)
    In this study, we present the design of ultra-compact and highly efficient photonic integrated devices by applying a meta-heuristic approach. Here, we integrated the three-dimensional finite-difference time-domain method ...
  • Yasa, Utku Gorkem; Turduev, Mirbek; Giden, Ibrahim Halil; Kurt, Hamza (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA, 2017)
    A novel concept of polarization beam splitting with high polarization extinction ratio is proposed based on the polarization sensitive self-collimation feature of symmetry reduced photonic crystals. The idea utilizes ...
  • Bor, Emre; Kurt, Hamza; Turduev, Mirbek; Evren, Aydin S. (IEEE Computer Society, 2019)
    In this paper, we propose a graded index (GRIN) medium to obtain subwavelength focusing of light in high and low normalized frequency regimes by using all-dielectric materials. Distributed profile of hyperbolic secant GRIN ...
  • Bor, Emre; Alparslan, Onur; Turduev, Mirbek; Hanay, Y. Sinan; Kurt, Hamza; Arakawa, Shin'ichi; Murata, Masayuki (OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA, 2018)
    Recently, different nanophotonic computational design methods based on optimization algorithms have been proposed which revolutionized the conventional design techniques of photonic integrated devices. The intelligently ...
  • Turduev, Mirbek; Tutgun, Mediha; Yılmaz, Döne; Yeltik, Aydan; Kurt, Hamza (Elsevier B.V., 2020-07)
    Inverse-design algorithms can be used to design compact and high-performance complex photonic structures. In this study, we propose the design of an all-dielectric optical resonator based on the concept of the parallel ...
  • Gailevicius, Darius; Jonusauskas, Linas; Sakalauskas, Danas; Hayran, Zeki; Kurt, Hamza; Turduev, Mirbek; Sakirazanovas, Simas; Juodkazis, Saulius; Mizeikis, Vygantas; Gadonas, Roaldas; Staliunas, Kestutis; Malinauskas, Mangirdas (SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA, 2017)
    In this work we explore a possibility to apply ultrafast 3D laser nanolithography in conjunction with pyrolysis to acquire glass-ceramic 3D structures in micro- and nano-scale. Laser fabrication allows for production of ...
  • Bor, Emre; Turduev, Mirbek; Kurt, Hamza (IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND, 2019)
    In the presented study, we proposed a design approach based on optimization algorithm to obtain mode order conversion in photonic crystal (PC) structures and experimentally verify the numerical result of the corresponding ...
  • Turduev, Mirbek; Giden, Ibrahim H.; Babayigit, Ceren; Hayran, Zeki; Bor, Emre; Boztug, Cicek; Kurt, Hamza; Staliunas, Kestutis (ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, 2017)
    In this paper, we propose and design a new type of an integrated optical sensor that performs sensing in a wide wavelength range corresponding to mid-infrared (mid-IR) spectrum. By engineering the structural parameters of ...
  • Turduev, Mirbek; Grineviciute, Lina; Babayiğit, Ceren; Gailevicius, Darius; Peckus, Martynas; Tolenis, Tomas; Vengris, Mikas; Kurt, Hamza; Staliunas, Kestutis (2021-03)
    Spatial filtering is an important mechanism to improve the spatial quality of laser beams. Typically, a confocal arrangement of lenses with a diaphragm in the focal plane is used for intracavity spatial filtering. Such ...
  • Hayran, Zeki; Turduev, Mirbek; Botey, Muriel; Herrero, Ramon; Staliunas, Kestutis; Kurt, Hamza (OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA, 2016)
    We propose and experimentally demonstrate a demultiplexer with point-defect resonators and a reflection feedback mechanism in a photonic crystal waveguide (PCW). A tapered PCW has been chosen as the necessary reflector, ...

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