Results 31 to 40 of about 316,745 (297)

Test of mode-division multiplexing and demultiplexing in free-space with diffractive transformation optics [PDF]

, 2017
open5openGIANLUCA RUFFATO, 1; FILIPPO ROMANATO, ; 1Department of Physics and Astronomy ‘G. Galilei’, University of Padova; 2Laboratory for Nanofabrication of Nanodevices, c.so Stati Uniti 4GIANLUCA RUFFATO, 1; Romanato, Filippo; Ruffato, Gianluca ...

core   +1 more source

Quantum wave equation of photon

, 2010
In this paper, we give the quantum wave equations of single photon when it is in the free or medium space. With these equations, we can study light interference and diffraction with quantum approach.
B.J. Smith, I. Bialynicki-Birula, I. Bialynicki-Birula, I. Bialynicki-Birula, J.E. Sipe, Li-Xin Chi, P.A.M. Dirac, P.A.M. Dirac, P.A.M. Dirac, Qing-Cai Wang, T.D. Newton, Xiang-Yao Wu, Xiao-Jing Liu, Yan Wang, Yi-Heng Wu   +14 more
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Diffractive sidewall grating coupler: towards 2D free-space optics on chip. [PDF]

, 2019
Silicon photonics has been the subject of intense research efforts. In order to implement complex integrated silicon photonic devices and systems, a wide range of robust building blocks is needed.
Cheben, Pavel, Hadij-ElHouati, Abdelfettah, Halir, Robert, Molina-Fernandez, Iñigo, Ortega-Moñux, Alejandro, Schmid, J.H., Wanguemert-Perez, Juan Gonzalo   +6 more
core   +1 more source

Relay-assisted free-space optical communication [PDF]

IEEE Transactions on Wireless Communications, 2007
In this paper, we present relay-assisted transmission as a powerful fading mitigation tool for free-space optical systems operating in atmospheric turbulence channels. We study both serial (i.e., multi-hop transmission) and parallel (i.e., cooperative diversity) relaying encoupled with amplify-and-forward and decode-and-forward modes.
Majid Safari, Murat Uysal
openaire   +1 more source

Novel Continuous-Time Markov Chain-Based Model for Performance Analysis of Hybrid Free Space Optics and Radio Frequency Communications

Applied Sciences
This paper introduces a Markov-process-based model to analyze the performance of hybrid Free Space Optics and Radio Frequency communication systems. The proposed model captures the dynamic behavior of the link by representing the transitions between ...
Vladimir Shakhov, Nikolai Shakhov, Insoo Koo   +2 more
doaj   +1 more source

2 × 20 Gbps - 40 GHz OFDM Ro-FSO transmission with mode division multiplexing [PDF]

Journal of the European Optical Society-Rapid Publications, 2014
Radio-over-Free-Space-Optics (Ro-FSO) is a promising technology for future wireless networks. In this work, we have designed a hybrid orthogonal frequency division multiplexing (OFDM) Ro-FSO system for transmission of two independent channels by mode ...
Amphawan A., Chaudhary S., Chan V.W.S.
doaj   +1 more source

Coherent addition of two dimensional array of fiber lasers

, 2008
Configurations for efficient free space coherent addition of four separate fiber lasers arranged in two dimensional array are presented. They include compact and robust interferometric combiners that can be inserted either inside or outside the cavity of
Asher A. Friesem, Augst, Eckhouse, Eckhouse, Elena Luria, Fridman, He, Kozlov, Liu, Michaille, Moti Fridman, Nir Davidson, Shimshi, Shirakawa, Vardit Eckhouse, Vladimir Krupkin, Wrage, Zhu   +17 more
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Transcriptional network analysis of PTEN‐protein‐deficient prostate tumors reveals robust stromal reprogramming and signs of senescent paracrine communication

Molecular Oncology, EarlyView.
Combining PTEN protein assessment and transcriptomic profiling of prostate tumors, we uncovered a network enriched in senescence and extracellular matrix (ECM) programs associated with PTEN loss and conserved in a mouse model. We show that PTEN‐deficient cells trigger paracrine remodeling of the surrounding stroma and this information could help ...
Ivana Rondon‐Lorefice, Jose I. Lopez, Aitziber Ugalde‐Olano, Maite Zufiaurre, Ianire Astobiza, Natalia Martin‐Martin, Laura Bozal‐Basterra, Saioa Garcia‐Longarte, Amaia Zabala‐Letona, Sofia Rey, Aida Santos‐Martin, Miguel Unda, Ana Loizaga‐Iriarte, Mariona Graupera, Paolo Nuciforo, Arkaitz Carracedo, Isabel Mendizabal   +16 more
wiley   +1 more source

Cavity atom optics and the `free atom laser'

, 1999
The trap environment in which Bose-Einstein condensates are generated and/or stored strongly influences the way they interact with light. The situation is analogous to cavity QED in quantum optics, except that in the present case, one tailors the matter ...
Adams, Bonifacio, Elias, Englert, Giessen, Haroche, Hopf, Hopf, Inouye, J. Heurich, Lenz, M.G. Moore, Meystre, Moore, Moore, P. Meystre, Parker, Scully, Shore   +18 more
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Photorealistic ray tracing of free-space invisibility cloaks made of uniaxial dielectrics [PDF]

, 2012
The design rules of transformation optics generally lead to spatially inhomogeneous and anisotropic impedance-matched magneto-dielectric material distributions for, e.g., free-space invisibility cloaks.
Halimeh, Jad C., Wegener, Martin
core   +3 more sources