Results 31 to 40 of about 3,058,814 (268)

Modeling and Simulation of the Intrinsic Function of a Photonic Switch

Frontiers in Physics, 2018
In this paper, I provide modeling and simulation results which show that a photonic switch can be realized by the application of two superluminescent light emitting diodes to a configuration of three 10 μm radius micro-ring resonators. The 130 nm silicon
Joseph Lydiate
doaj   +1 more source

2D Metal-Organic Frameworks: Properties, Synthesis, and Applications in Electrochemical and Optical Biosensors

Biosensors, 2023
Two-dimensional (2D) nanomaterials like graphene, layered double hydroxides, etc., have received increasing attention owing to their unique properties imparted by their 2D structure.
Anamika Ghosh, Sana Fathima Thanutty Kallungal, Sundara Ramaprabhu   +2 more
doaj   +1 more source

Results of the Optical Downlink Experiment KIODO from OICETS Satellite to Optical Ground Station Oberpfaffenhofen (OGS-OP)

, 2007
Optical LEO downlinks from the Japanese OICETS to the optical ground station built by the German Aerospace Center (DLR) near Munich have been performed. This was the first optical LEO downlink on European grounds.
Perlot, Nicolas, Giggenbach, Dirk, Takayama, Yoshihisa, Horwath, Joachim, N. Perlot, Brechtelsbauer, Martin, Y. Takayama, Knapek, Markus, D. Giggenbach, Jono, Takashi, J. Horwath, M. Brechtelsbauer, T. Jono, M. Knapek   +13 more
core   +1 more source

Axial length acquisition success rates and agreement of two swept-source optical biometers in eyes with dense cataracts

Frontiers in Medicine
BackgroundSwept-source optical coherence tomography–based (SS-OCT) biometers have been used in different clinical studies with the aim of assessing the accuracy of the technique, specifically in eyes with dense cataracts. Our objective is to evaluate the
Paz Orts-Vila, Santiago Tañá-Sanz, Cristina Tello-Elordi, Robert Montés-Micó, Pedro Tañá-Rivero   +4 more
doaj   +1 more source

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations

, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

Experimental Estimation of Kinematic Viscosity of Low-Density Air Using Optically Derived Macroscopic Transient Flow Parameters

Sensors
This article presents a novel experimental method of calculation of kinematic viscosity parameter for rarefied/low-density air using the analysis of optically recorded oscillations of the stratospheric balloon mission parachute’s canopy.
Tomasz Aleksander Miś
doaj   +1 more source

Combined Optical and Radio‐Frequency Perspectives on the Time Evolution of Lightning Measured by the FORTE Satellite

Earth and Space Science, 2022
We use a cluster feature data set for the Fast On‐orbit Recording of Transient Events (FORTE) satellite that combines detections from its pixelated Lightning Locating System (LLS), photodiode detector (PDD) and Radio‐Frequency (RF) instrumentation to ...
Michael Peterson
doaj   +1 more source

Electrostatic MEMS Phase Shifter for SiN Photonic Integrated Circuits

Journal of Sensor and Actuator Networks
Optical phase modulation is essential for a wide range of silicon photonic integrated circuits used in communication applications. In this study, an optical phase shifter utilizing photo-elastic effects is proposed, where mechanical stress is induced by ...
Seyedfakhreddin Nabavi, Michaël Ménard, Frederic Nabki   +2 more
doaj   +1 more source

Antifungal and Photocatalytic Activities of ZnO Nanoparticles using Phyllanthus Emblica Leaf Extract [PDF]

Nanochemistry Research
To generate zinc oxide nanoparticles, we report a straight forward combination reaction between zinc nitrate and Phyllanthus emblica leaf extract. The synthesized nanoparticles were subjected to morphological, optical, and structural studies. We utilized
Anbuvannan Mari, Maria Vinosel Vincent, Ramesh Mookkaiah, Dhatshanamurthi Pachiyappan, Uvarajan Sambath   +4 more
doaj   +1 more source

FORTE Measurements of Global Optical Lightning Waveforms and Implications for Optical Lightning Detection

Earth and Space Science, 2022
Lightning processes generate a diverse collection of optical pulses from current traversing the lightning channels. These signals are then broadened spatially and temporally via scattering in the clouds.
Michael Peterson
doaj   +1 more source