POLYMER–BASED RESONANT WAVEGUIDE GRATING STRUCTURE AND ITS APPLICATIONS
type: CreativeWork
description: Resonance waveguide grating structures have been a subject of interest for several decades. This optical technique offers unique advantages when compared with other optical components. This stems from their relatively simple structure comprised of layers, as well as their high reflection efficiency within a narrow spectral bandwidth. Typical resonance waveguide grating structures that exhibit these characteristics are cost effective and fabricated with fewer materials than conventional multilayer resonance structures. Essentially, only a grating, waveguide, and substrate layer are required for its operation. In addition, unique spectral characteristics can be obtained by varying the grating and layer structure. Among these characteristics are symmetric low sideband reflections over large wavelength ranges, variable spectral bands, and polarization dependent or independent reflections. In the research presented, the basis for the resonance waveguide grating structure is developed. The diffraction gratings are fabricated using a photolithographic process. A custom setup employing Lloyd’s Mirror Interferometer allows the fabrication of gratings with a wide period range. This technique renders uniform and continuous one-dimensional and twodimensional structures. The gratings are successfully implemented into a resonance waveguide iii grating structure. First, an elastomeric polymer resonant waveguide grating structure is demonstrated to work effectively as a pressure sensor. The external applied pressure is measured optically by the spectrum resonance peak shift the developed sensor incurs. The sensitivity of the demonstrated sensor can be tuned to different pressure ranges by adjusting the layer thickness of the fabricated waveguide and cladding layers, and also by selecting polymers with certain elastic properties. Secondly, an acousto-optic sensor based on the resonance waveguide grating structure is presented. The sensor is fabricated utilizing low Young’s modulus p…
abstract: Resonance waveguide grating structures have been a subject of interest for several decades. This optical technique offers unique advantages when compared with other optical components. This stems from their relatively simple structure comprised of layers, as well as their high reflection efficiency within a narrow spectral bandwidth. Typical resonance waveguide grating structures that exhibit these characteristics are cost effective and fabricated with fewer materials than conventional multilayer resonance structures. Essentially, only a grating, waveguide, and substrate layer are required for its operation. In addition, unique spectral characteristics can be obtained by varying the grating and layer structure. Among these characteristics are symmetric low sideband reflections over large wavelength ranges, variable spectral bands, and polarization dependent or independent reflections. In the research presented, the basis for the resonance waveguide grating structure is developed. The diffraction gratings are fabricated using a photolithographic process. A custom setup employing Lloyd’s Mirror Interferometer allows the fabrication of gratings with a wide period range. This technique renders uniform and continuous one-dimensional and twodimensional structures. The gratings are successfully implemented into a resonance waveguide iii grating structure. First, an elastomeric polymer resonant waveguide grating structure is demonstrated to work effectively as a pressure sensor. The external applied pressure is measured optically by the spectrum resonance peak shift the developed sensor incurs. The sensitivity of the demonstrated sensor can be tuned to different pressure ranges by adjusting the layer thickness of the fabricated waveguide and cladding layers, and also by selecting polymers with certain elastic properties. Secondly, an acousto-optic sensor based on the resonance waveguide grating structure is presented. The sensor is fabricated utilizing low Young’s modulus p…
author: Xie, Antonio Jou
keywords: nanofabrication, ultrasound, pressure, Electrical and Computer Engineering, Engineering
date published: 2014-01-01T08:00:00Z
date modified: 2026-07-24T01:57:08Z
provider: City University of New York - City College
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: City University of New York - City College