Results 221 to 230 of about 68,671 (265)

Photonic magneto-transport

Physica B: Condensed Matter, 1998
Abstract We report the observation of photonic analogues of electronic magneto-transport phenomena which appear in the magnetic field dependence of diffuse light transmission through random media. Both a photonic Hall effect and photonic magneto-resistance have been found to be in reasonable agreement with recent theoretical predictions.
Rikken, G., Sparenberg, A., van Tiggelen, B.   +2 more
openaire   +2 more sources

Photon transport transistor

International Technical Digest on Electron Devices Meeting, 2003
A novel optoelectronic device is presented which consists of a light-emitting diode (LED) on top of a photodiode, with very tight optical coupling. The device is similar to a bipolar transistor except that photons rather than minority carriers are transported through the base. Devices fabricated with the GaAs-AlGaAs material system yield a current gain
B.J. Van Zeghbroeck, C. Harder, H.P. Meier, W. Walter   +3 more
openaire   +1 more source

Disorder-Enhanced Transport in Photonic Quasicrystals

Science, 2011
Optical interference in a photorefractive crystal is used to study light propagation in a controlled disordered system.
L. Levi, M. Rechtsman, B. Freedman, T. Schwartz, O. Manela, M. Segev   +5 more
openaire   +2 more sources

Analysis of Multicasting in Photonic Transport Networks

Proceedings of the International IFIP-IEEE Conference on Broadband Communications, Global Infrastructure for the Information Age, 1996
The introduction of multicasting in optical transport networks is analysed and discussed. Three different optical path realisation techniques, involving the multicasting function, are examined: the Multicast Wavelength Path (MWP), the Multicast Virtual Wavelength Path (MVWP) and the Partial Multicast Virtual Wavelength Path (PVWP).
E. Iannone, LISTANTI, Marco, R. Sabella
openaire   +1 more source

On methods of inhomogeneity corrections for photon transport

Medical Physics, 1990
Eight methods of photon inhomogeneity correction were examined for their photon transport approximations. The methods were categorized according to the different approaches used to model scatter photon dose contribution. They were the ratio of TAR (RTAR) and the modified Batho power law which utilized only the 1‐D density information along the primary ...
J W, Wong, J A, Purdy
openaire   +2 more sources

Gamma Photon Transport on the GPU for PET

2010
This paper proposes a Monte Carlo algorithm for gamma-photon transport, that partially reuses random paths and is appropriate for parallel GPU implementation According to the requirements of the application of the simulation results in reconstruction algorithms, the method aims at similar relative rather than absolute errors of the detectors The ...
László Szirmay-Kalos, Balázs Tóth, Milán Magdics, Dávid Légrády, Anton A. Penzov   +4 more
openaire   +1 more source

Topological Transport in Photonic Quasicrystals

CLEO: 2015, 2015
We show that it is possible to have topological transport in photonic quasicrytals, and therefore this lattices have one-way extended edgestates that are topologically protected against backscattering as they pass through defects or around corners.
Miguel A. Bandres, Mikael Rechtsman, Mordechai Segev   +2 more
openaire   +1 more source

Photonic transport network OAM technologies

IEEE Communications Magazine, 1996
The optical path concept was proposed to realize ubiquitous B-ISDN. It can make quantum leaps in both transmission capacity and cross-connect throughput simultaneously by exploiting WDM (wavelength division multiplexing) transmission and the wavelength routing capabilities of paths. Since the optical path is a new concept, new operation and management (
openaire   +1 more source

Anomalous transport of light in photonic crystal

Science China Information Sciences, 2013
Photonic crystal (PC) offers a powerful means to mold the flow of light and manipulate lightmatter interaction at subwavelength scale. In this paper, we review some recent theoretical and experimental work in our group on design and fabrication of microwave and infrared PC structures with the capability to achieve various anomalous transport behaviors ...
openaire   +1 more source

Evaluation of bremsstrahlung contribution to photon transport in coupled photon–electron problems

Radiation Physics and Chemistry, 2015
Abstract The most accurate description of the radiation field in x-ray spectrometry requires the modeling of coupled photon–electron transport. Compton scattering and the photoelectric effect actually produce electrons as secondary particles which contribute to the photon field through conversion mechanisms like bremsstrahlung (which produces a ...
FERNANDEZ, JORGE EDUARDO, SCOT, VIVIANA, DI GIULIO, EUGENIO, Salvat, F.   +3 more
openaire   +2 more sources