Results 31 to 40 of about 92,341 (305)
Optical fibre taper-enabled waveguide photoactuators
Nature Communications, 2022 Despite promising devices, waveguide photoactuators actuating performances have been fundamentally restricted by the nature of standard optical fibres. To overcome these challenges, authors propose an optical fibre taper-enabled waveguide photoactuator ...
Jianliang Xiao +13 more
doaj +1 more source
Coupling ideality of integrated planar high-Q microresonators [PDF]
, 2016 Chipscale microresonators with integrated planar optical waveguides are useful building blocks for linear, nonlinear and quantum optical devices. Loss reduction through improving fabrication processes has resulted in several integrated micro resonator ...
Geiselmann, Michael +3 more
core +2 more sources
NONLINEAR EFFECTS IN WAVEGUIDE DEVICES
Le Journal de Physique Colloques, 1988 All-optical switching and routing of light in fibers and waveguides has the potential of handling optical signals at ul rahigh speed. By using very rapid electronic nonlinearities in transparent materials, extremely fast switching free of thermal problems could be obtained. The guided wave environment reduces the peak power requirements.
Silberberg, Y., Sfez, B.
openaire +1 more source
Two-Mode Waveguide Characterization by Intensity Measurements from Exit Face Images
IEEE Photonics Journal, 2012 A method that characterizes two-mode waveguides whose modes cannot be selectively excited (such as buried waveguides) is presented and demonstrated. The theoretical results are presented for $N$ modes, although for the sake of simplicity, only the two ...
Xesús Prieto-Blanco +1 more
doaj +1 more source
The realization of an integrated Mach-Zehnder waveguide immunosensor in silicon technology [PDF]
, 1997 We describe the realization of a symmetric integrated channel waveguide Mach-Zehnder sensor which uses the evanescent field to detect small refractive-index changes (¿nmin ¿ 1 × 10¿4) near the guiding-layer surface.
Brugman, A.M. +5 more
core +2 more sources
Silicon subwavelength waveguiding devices [PDF]
High Contrast Metastructures IX, 2020 SPIE OPTO, 2020, San Francisco, California, United States. -- 8 pags., 6 figs. Silicon photonics has emerged as an intense field of research due to its unique capabilities to integrate photonics and electronics into the same platform using standard semiconductor fabrication facilities. Subwavelength grating (SWG) structures, i.e.
Molina-Fernández, Iñigo +14 more
openaire +2 more sources
Demonstration of Optical Nonlinearity in InGaAsP/InP Passive Waveguides [PDF]
, 2018 We report on the study of the third-order nonlinear optical interactions in In$_{x}$Ga$_{1-x}$As$_{y}$P$_{1-y}$/InP strip-loaded waveguides. The material composition and waveguide structures were optimized for enhanced nonlinear optical interactions.
Awan, Kashif M. +5 more
core +2 more sources
A high efficiency input/output coupler for small silicon photonic devices [PDF]
, 2005 Coupling light from an optical fibre to small optical waveguides is particularly problematic in semiconductors, since the refractive index of the silica fibre is very different from that of a semiconductor waveguide.
Atta, R. +7 more
core +2 more sources
Plasmonic coaxial waveguide-cavity devices
Optics Express, 2015 We theoretically investigate three-dimensional plasmonic waveguide-cavity structures, built by side-coupling stub resonators that consist of plasmonic coaxial waveguides of finite length, to a plasmonic coaxial waveguide. The resonators are terminated either in a short or an open circuit.
Amirreza, Mahigir +4 more
openaire +2 more sources
Failures in power-combining arrays [PDF]
, 1999 We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in terms of the scattering coefficient of the failed device and reflection coefficient of an input ...
Cheng, Nai-Shuo +4 more
core +1 more source