Results 101 to 110 of about 276,203 (321)
Compact Optical Waveguides Based on Hybrid Index and Surface-Plasmon-Polariton Guidance Mechanisms
Active and Passive Electronic Components, 2007 Surface-plasmon-polariton (SPP) waveguides made of materials available in nature have, in general, been found to suffer from very high absorption loss when light confinement is beyond diffraction limit.
Min Yan, Min Qiu
doaj +1 more source
$\mathcal{PT}$-symmetry breaking in a necklace of coupled optical waveguides
, 2013 We consider parity-time ($\mathcal{PT}$) symmetric arrays formed by $N$ optical waveguides with gain and $N$ waveguides with loss. When the gain-loss coefficient exceeds a critical value $\gamma_c$, the $\mathcal{PT}$-symmetry becomes spontaneously ...
Alexeeva, N V +2 more
core +1 more source
Advanced Healthcare Materials, EarlyView.A compact handheld GelSight probe reconstructs in vivo 3‐D skin topography with micron‐level precision using a custom elastic gel and a learning‐based surface normal to height map pipeline. The device quantifies wrinkle depth across various body locations and detects changes in wrinkle depth following moisturizer application.
Akhil Padmanabha +12 more
wiley +1 more source
A multi-layer platform for low-loss nonlinear silicon photonics
APL Photonics, 2019 We demonstrate four-wave mixing (FWM) interactions in a-Si:H waveguides in a multilayer integrated silicon photonic chip. The a-Si:H waveguides are accessed through interlayer couplers from waveguides composed of SiNx.
Neil MacFarlane +4 more
doaj +1 more source
Waveguide, waveguide production method, and polarisation splitter using said waveguide
, 2019 The invention relates to a waveguide and a polarisation splitter based on said waveguide, in which a rotation of an angle greater than zero is applied to a plurality of sections of a core material and a plurality of sections of a covering material, thereby achieving independent control of the refractive indices of a zero-order transverse electric mode ...
Halir, Robert +6 more
openaire +1 more source
Advanced Materials, EarlyView.The concept of spatially‐controlled planar guided crystallization is a novel method for programming the growth of optically homogeneous low‐loss Sb2S3 phase‐change material (PCM), leveraging the directional crystallization within confined channels.
Fouad Bentata +16 more
wiley +1 more source
Advanced Materials, EarlyView.A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller +15 more
wiley +1 more source
Waveguide Engineering of Graphene Optoelectronics—Modulators and Polarizers
IEEE Photonics Journal, 2018 The concept of incorporating graphene into nanophotonic waveguides has pullulated into massive broadband optoelectronic applications with compact footprint.
Yuan Meng +7 more
doaj +1 more source
Advanced Materials, EarlyView.Hydrogels demonstrate material properties that mimic the mechanical and chemical environments of biological tissues. Yet, they face challenges during their integration into 3D interfaces. By identifying a class of thermoplastic hydrogels, a strategy is developed to pattern hydrogels in thermally drawn fibers.
Changhoon Sung +13 more
wiley +1 more source
Flexible Polymer Planar Optical Waveguides [PDF]
, 2014 We report about design, fabrication and properties of flexible polymer optical planar waveguides made of Epoxy Novolak Resin as planar waveguides deposited on various foil substrates.
Hyps, P. +4 more
core +1 more source