Results 31 to 40 of about 12,290,752 (249)
Labyrinthine Structure with Subwavelength and Broadband Sound Insulation [PDF]
Shock and Vibration, 2020 In this text, the combination of spiral structure and zigzag channels is introduced to design labyrinthine structures, in which sound waves can propagate alternately in the clockwise and counterclockwise directions. Finite element method and S-parameter retrieval method are used to calculate band structures, effective parameters, and transmission ...
Heng Jiang +6 more
openaire +3 more sources
Suspended Dielectric Mirrors at Deep Subwavelength Scale
IEEE Photonics Journal, 2018 Reduction in the thickness of air-suspended mirrors to the deep subwavelength scale can facilitate efficient optical and mechanical design. The thinner the mirror, the smaller is its mass, and the more excellent mechanical properties it presents.
Ze Lin Tan +3 more
doaj +1 more source
Tunable Flat-Top Filtering Response in Cascaded Resonant Waveguide Gratings
IEEE Photonics Journal, 2021 The applicability of resonant waveguide grating (RWG)-based structures as filters to control the spectral response in an optical communication system is investigated.
Jinhua Hu +5 more
doaj +1 more source
Single-Cycle Gap Soliton in a Subwavelength Structure [PDF]
Physical Review Letters, 2010 We demonstrate that a single sub-cycle optical pulse can be generated when a pulse with a few optical cycles penetrates through resonant two-level dense media with a subwavelength structure. The single-cycle gap soliton phenomenon in the full Maxwell-Bloch equations without the frame of slowly varying envelope and rotating wave approximations is ...
Mihai A. Macovei, Xiao-Tao Xie
openaire +4 more sources
IEEE Photonics Journal, 2019 We present the realization of a high-efficiency, compact, and thermally tunable unidirectional launcher of surface plasmon polaritons (SPPs) in a double-slit structure filled with phase change materials (PCMs). PCMs such as VO2 provide a feasible way for
Mehdi Afshari-Bavil +4 more
doaj +1 more source
Single-channel bimodal interferometric sensor using subwavelength structures.
Optics Express, 2019 A novel configuration of photonic sensors based on a single-channel bimodal interferometer is proposed. The design consists of a subwavelength grating (SWG) periodic structure supporting two dispersive TE-like modes that interfere at the output to create
L. Torrijos-Morán, J. García-Rupérez
semanticscholar +1 more source
Novel Quadruple-Band Microwave Metamaterial Absorber
IEEE Photonics Journal, 2015 In this paper, we report the design, analysis, and simulation of a novel quadrupleband metamaterial absorber at microwave frequencies. The absorber is composed of delicate periodic patterned structures and a metallic background plane, which are separated
Nan Wang +6 more
doaj +1 more source
Inverse designed extended depth of focus meta-optics for broadband imaging in the visible
Nanophotonics, 2021 We report an inverse-designed, high numerical aperture (∼0.44), extended depth of focus (EDOF) meta-optic, which exhibits a lens-like point spread function (PSF).
Bayati Elyas +5 more
doaj +1 more source
Arbitrarily-Wide-Band Dielectric Mirrors and Their Applications to SiGe Solar Cells
IEEE Photonics Journal, 2015 The dielectric mirror is an important optical component for optoelectronic devices, passive photonic devices, and solar cells. Unfortunately, the reflection bandwidth of distributed Bragg reflectors (DBRs) and high-index contrast mirrors (HCGs) are ...
Yan Kai Zhong +4 more
doaj +1 more source
Guiding and Confining Light in Low-Index Circularly Symmetric Waveguides
IEEE Photonics Journal, 2011 A circularly symmetric waveguide with a low-index ring inside the core has been proposed and studied comprehensively. By taking advantage of the azimuthal TM01 mode, the structure can confine light inside the low-index region with very high power ...
Wenfu Zhang +3 more
doaj +1 more source