Results 21 to 30 of about 616,352 (198)

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

AirQKD: The Role of Free-Space Optics Quantum Key Distribution Enabling Pragmatic Secure and Scalable Communications

IEEE Communications Magazine
Next generation communications will require the exploration of alternatives to existing technologies to enable end-to-end connections for secure data exchange. 5G presents advanced connectivity opportunities even for remote rural areas. However, existing
Zoe C. M. Davidson, Emilio Hugues-Salas, Gerald M. Bonner, Brynmor E. Jones, John Prentice, Sharana Kariappa, Daniel S. Fowler, R. Oliveira, Peide Zhang, Yuri Andersson, E. Kosmatos, A. Stavdas, Andrew Lord   +12 more
semanticscholar   +1 more source

Metamaterial unipolar quantum optoelectronics for mid-infrared free-space optics

APL Photonics
Free-space optical communications in the mid-infrared transparency windows (4–5 and 8–14 μm wavelength regions) is emerging as a viable solution for high bitrate data transmission.
T. Bonazzi, H. Dely, P. Didier, D. Gacemi, B. Fix, M. Beck, J. Faist, A. Harouri, I. Sagnes, F. Grillot, A. Vasanelli, C. Sirtori   +11 more
semanticscholar   +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
core   +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
core   +1 more source

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

Experimental study of bit error rate of free space optics communications in laboratory controlled turbulence [PDF]

, 2010
This paper reports experimental results for the performance of an free space optical (FSO) communication link employing different modulation schemes under the influence of the atmospheric scintillation.
Adebanjo, Olusegun, Ansari, S., Ghassemlooy, Zabih, Ijaz, Muhammad, Le Minh, Hoa, Leitgeb, Erich, Rajbhandari, Sujan   +6 more
core   +1 more source

Free-space laser optical link simulation software [PDF]

, 2008
GDAF (Displays and Photonics Applications Group) in Electronics Technology Department at University Carlos III de Madrid develops a hardware-software application for a communications free-space optical link, in a Project with INSA corp.
Vergaz Benito, Ricardo
core   +1 more source

Diffraction-free subwavelength-beam optics

, 2003
Diffraction is a fundamental property of light propagation. Owing to this phenomenon,light diffracts out in all directions when it passes through a subwavelength slit.This imposes a fundamental limit on the transverse size of a light beam at a given ...
Adams, Arlt, Ash, Bateman, Besieris, Bethe, Betzig, Betzig, Bouchal, Bouchal, Brittingham, Canning, Chavez-Cerda, Chew, Chutinan, Dogariu, Durnin, Ebbesen, Girard, Gori, Grunwald, Gutirrez-Vega, Gutirrez-Vega, Hafizi, Herman, Jarutis, Jones, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Kukhlevsky, Lewis, Lezec, M. Mechler, Marcuse, Martin-Moreno, McDonald, Neerhoff, Okamoto, Orlov, Orlov, Ouzounov, Porras, Porras, Porras, Porras, Rayleigh, Rushin, Rushin, S.V. Kukhlevsky, Saari, Saleh, Skryabin, Snyder, Stratton, Tsao, Vassallo, Yariv, Zamboni-Rached, Zamboni-Rached, Ziolkowski   +62 more
core   +1 more source