Results 31 to 40 of about 276,203 (321)
Coupled Strip-Array Waveguides for Integrated Mid-IR Gas Sensing
Photonics, 2023 Non-dispersive infrared (NDIR) absorption spectroscopy is a widespread approach to gas sensing due to its selectivity and conceptual simplicity. One of the main challenges towards the development of fully integrated NDIR sensors is the design and ...
Pooja Thakkar +12 more
doaj +1 more source
Low dispersion integrated michelson interferometer on silicon on insulator for optical coherence tomography [PDF]
, 2011 We present an integrated silicon Michelson interferometer for OCT fabricated with wafer scale deep UV lithography. Silicon waveguides of the interferometer are designed with GVD less than 50 ps/nm. km. The footprint of the device is 0.5 mm x 3 mm.
Baets, Roel +2 more
core +1 more source
Surface plasmon polariton modes in coaxial metal-dielectric-metal waveguides
New Journal of Physics, 2016 We explore the optical properties of a coaxial plasmonic metamaterial consisting of hollow dielectric cylinders with a diameter of 100–250 nm and a ring wall width of 10–50 nm, embedded in metal.
Marie Anne van de Haar +3 more
doaj +1 more source
Dielectric Sensors Based on Electromagnetic Energy Tunneling
Sensors, 2015 We show that metallic wires embedded in narrow waveguide bends and channels demonstrate resonance behavior at specific frequencies. The electromagnetic energy at these resonances tunnels through the narrow waveguide channels with almost no propagation ...
Omar Siddiqui +2 more
doaj +1 more source
New silicon photonics integration platform enabled by novel micron-scale bends
, 2013 Even though submicron silicon waveguides have been proposed for dense integration of photonic devices, to date the lightwave circuits on the market mainly rely on waveguides with micron-scale core dimensions.
Aalto, Timo +4 more
core +1 more source
Physical origin of higher-order soliton fission in nanophotonic semiconductor waveguides [PDF]
, 2018 Supercontinuum generation in Kerr media has become a staple of nonlinear optics. It has been celebrated for advancing the understanding of soliton propagation as well as its many applications in a broad range of fields.
Ciret, Charles +5 more
core +5 more sources
A Dual-Slot Electro-Optic Modulator Based on an Epsilon-Near-Zero Oxide
IEEE Photonics Journal, 2019 A dual-slot silicon electro-optic modulator based on indium tin oxide is proposed with high modulation efficiency, low loss, and broadband operation leveraging the epsilon-near-zero (ENZ) effect.
Yingxin Kuang +4 more
doaj +1 more source
Enhanced optical Kerr nonlinearity of graphene/Si hybrid waveguide
, 2018 In this work, we experimentally study the optical kerr nonlinearities of graphene/Si hybrid waveguides with enhanced self-phase modulation. In the case of CMOS compatible materials for nonlinear optical signal processing, Si and silicon nitride ...
Cong, Hui +7 more
core +1 more source
IEEE Photonics Journal, 2018 A metal–dielectric–metal (MDM) waveguide coupled with fixed height to length ( $b_{i}/ a_{i}={\text{0.8}}$) stubs is proposed in our work. Then, an obvious band-stop filtering phenomenon can be observed in MDM waveguide coupled with single ...
Z. H. He, Z. P. Zhou
doaj +1 more source
Advanced Engineering Materials, EarlyView.Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar +5 more
wiley +1 more source