Subwavelength structured silicon waveguides and photonic devices
Nanophotonics, 2020 Subwavelength structures such as subwavelength gratings (SWGs) and subwavelength metamaterials are capable of tailoring the optical properties of materials and controlling the flow of light at the nanoscale.
Sun Lu +4 more
doaj +1 more source
THz Near-Field Imaging of Extreme Subwavelength Metal Structures [PDF]
ACS Photonics, 2020 Modern scattering-type scanning near-field optical microscopy (s-SNOM) has become an indispensable tool in material research.
Xinzhong Chen +17 more
semanticscholar +1 more source
High-Transmission Biomimetics Structural Surfaces Produced via Ultrafast Laser Manufacturing
Biomimetics, 2023 Inspired by periodically aligned micro/nanostructures on biological surfaces, researchers have been fabricating biomimetic structures with superior performance. As a promising and versatile tool, an ultrafast laser combined with other forms of processing
Rui-Zhe Leng +6 more
doaj +1 more source
Millimeter-wave broadband antireflection coatings using laser ablation of subwavelength structures. [PDF]
Applied Optics, 2016 We report on the first use of laser ablation to make submillimeter, broadband, antireflection coatings (ARCs) based on subwavelength structures (SWSs) on alumina and sapphire.
T. Matsumura +9 more
semanticscholar +1 more source
Ultra-Compact Sub-Wavelength Grating Polarization Splitter-Rotator for Silicon-on-Insulator Platform
IEEE Photonics Journal, 2016 We designed and fabricated a polarization splitter-rotator (PSR) on a silicon-on-insulator (SOI) platform based on an asymmetric directional coupler. The asymmetric directional coupler consists of a regular strip waveguide and a sub-wavelength grating ...
Yun Wang +6 more
doaj +1 more source
Compressive Imaging of Subwavelength Structures [PDF]
SIAM Journal on Imaging Sciences, 2009 The problem of imaging extended targets (sources or scatterers) is formulated in the framework of compressed sensing with emphasis on subwavelength resolution. The proposed formulation of the problems of inverse source/scattering is essentially exact and leads to the random partial Fourier measurement matrix.
openaire +3 more sources
Subwavelength optical localization with toroidal excitations in plasmonic and Mie metamaterials
InfoMat, 2021 Since the performance of electronic circuits is becoming rather limited in face of intensively increasing of amount of information and related operations, all‐optical processing offers a promising strategy for future information system.
Ruisheng Yang +7 more
doaj +1 more source
Wide band UV/Vis/NIR blazed-binary reflective gratings: two lithographic techniques investigation [PDF]
EPJ Web of Conferences, 2021 We report on subwavelength reflective gratings for hyperspectral applications operating in the 340 nm-1040 nm spectral range. The blazed grating period is 30 μm and is composed of 2D subwavelength binary structures with sizes in-between 120 nm and 350 nm.
Lee Mane-Si Laure +11 more
doaj +1 more source
A Mid-Infrared Dual-Band Filter With Ultra-High Resolving Power
IEEE Photonics Journal, 2020 A mid-infrared (mid-IR) dual-band filter with ultra-high resolving power is designed and numerically investigated. It is composed of an Al2O3 layer between a gold grating and a CaF2 substrate.
Xin He +4 more
doaj +1 more source
Apodized Focusing Fully Etched Subwavelength Grating Couplers
IEEE Photonics Journal, 2015 We experimentally demonstrate apodized focusing subwavelength grating couplers for both the fundamental transverse electric (TE00) mode and the fundamental transverse magnetic (TM00) mode.
Yun Wang +10 more
doaj +1 more source