Results 21 to 30 of about 3,501,692 (262)

Multiple Wavelength Free-Space Laser Communications [PDF]

, 2003
Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas, Hennes Henniger, Giggenbach, Dirk, Nicolas Perlot, Henniger, Hennes, Florian David, Robert Purvinskis, David, Florian, Dirk Giggenbach, Purvinskis, Robert   +9 more
core   +1 more source

Multi-Temporal Sentinel-1 and -2 Data Fusion for Optical Image Simulation

ISPRS International Journal of Geo-Information, 2018
In this paper, we present the optical image simulation from synthetic aperture radar (SAR) data using deep learning based methods. Two models, i.e., optical image simulation directly from the SAR data and from multi-temporal SAR-optical data, are ...
Wei He, Naoto Yokoya
doaj   +1 more source

Exploitation of the IPHAS to Investigate Planetary Nebulae

Frontiers in Astronomy and Space Sciences, 2022
Similar to other classes of astronomical objects, there is a large discrepancy between the total count of theoretically predicted planetary nebulae (PNe) and the number of those actually observed.
Laurence Sabin, Jesús A. Toalá, Gerardo Ramos-Larios, Martín A.  Guerrero   +3 more
doaj   +1 more source

Optical trapping with a perfect vortex beam [PDF]

, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko, Ewan M. Wright, Wright, Ewan M., Michael Mazilu, Chen, Mingzhou, Mazilu, Michael, Dholakia, Kishan, Yoshihiko Arita, Mingzhou Chen, Kishan Dholakia   +9 more
core   +1 more source

Optical cements for interferometric applications [PDF]

, 1984
The wave front distortion introduced by optical cements is important in interferometric applications. We describe here tests performed to characterize two common cements, Epo-Tek 301 and Norland Optical Adhesive ...
Wimperis, J.R., Johnston, S.F.
core   +1 more source

Are optical trocars free of complications?

Clinical Case Reports, 2019
Key Clinical Message Optical view trocars provide an acceptable level of safety for port entry during minimally invasive surgery. Nevertheless, this technique is not exempt from potential complications.
Roberto Bustos, Mario Masrur, Patrice Frederick   +2 more
doaj   +1 more source

Optical Label Switching Functionalities Employing Semiconductor Optical Amplifiers [PDF]

, 2006
Optical labelling of data packets enables high router throughputs. Semiconductor optical amplifiers (SOAs) are key building blocks to implement the functionalities required for fast optical label ...
Vegas Olmos, J.J., E. van Breusegem, KOONEN, A, Olmos, J. J. Vegas, YAN, N, C. Peucheret, Koonen, A. M. J., A.M.J. Koonen, Breusegem, E., Yan, N., Van Breusegem, Erik, J. J. Vegas Olmos, TAFUR MONROY, I, Peucheret, Christophe, Peucheret, C., N. Yan, Tafur Monroy, I.; id_orcid, Tafur Monroy, I., PEUCHERET, C, Tafur Monroy, Idelfonso, VEGAS OLMOS, J, Koonen, A.M.J., Breusegem, van, E., I. Tafur Monroy   +23 more
core   +1 more source

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

Force measurements with optical tweezers inside living cells [PDF]

, 2014
The force exerted by optical tweezers can be measured by tracking the momentum changes of the trapping beam, a method which is more general and powerful than traditional calibration techniques as it is based on first principles, but which has not been ...
Farre, A., Martin-Badosa, E., Josep Mas, Jordi Sancho-Parramon, Arnau Farré, Sancho-Parramon, J., Montes-Usategui, M., Mario Montes-Usategui, Mas, J., Estela Martín-Badosa   +9 more
core   +1 more source