Results 231 to 240 of about 18,742,671 (287)

All-Optical Quaternary Logic Gates – An Extension of Binary Logic Gates

Optics and Laser Technology, 2015
Abstract All optical multivalued logic processors are of paramount importance in optical computing and signal processing. In this communication, the author proposes a new method of developing all-optical quaternary logic gates which are the extension of binary logic gates.
exaly   +2 more sources

Realization of All Optical Logic Gates Using Universal NAND Gates on Photonic Crystal Platform

Superlattices and Microstructures, 2017
In this paper, the design of all-optical logic gates using the combination of universal NAND gates has been proposed. The photonic crystal structure consists of triangular lattice arrangement of air holes in silicon.
Yogita Kalra, Preeti Rani, R K Sinha
exaly   +2 more sources

All-optical programmable logic gate

Applied Optics, 1990
Experimental results are presented showing all-optical programmability and operation of a multifunction Boolean logic gate. All eight symmetric two-input logic functions have been demonstrated. Comments on the practical implementation and usage of this gate within an optical circuit are made.
R G, Craig, G S, Buller, F A, Tooley, S D, Smith, A C, Walker, B S, Wherrett   +5 more
openaire   +2 more sources

All-optical integrated micro logic gate

Microelectronics Journal, 2011
In this paper we present a novel approach for realizing an integrated all-optical logic gate. The basic principle is based upon stimulated emission process generated in an active gain medium while special interferometric photonic wave-guiding structure allows the realization of an integrated micro scale device. The operation rate of the proposed device
Arkady Rudnitsky, Asaf Shahmoon, Menachem Nathan, Moshe Nazarathy, Bar Larom, Jacek Jasieniak, Alessandro Martucci, Luca Businaro, Annamaria Gerardino, Zeev Zalevsky   +9 more
openaire   +2 more sources

All-optical logic gates with bacteriorhodopsin

Current Applied Physics, 2003
Abstract All-optical logic gates with bacteriorhodopsin (bR) protein molecules have been demonstrated based on all-optical switching of a cw probe laser beam by multiple pulsed pump laser beams due to nonlinear intensity-induced excited-state absorption.
C.P. Singh, Sukhdev Roy
openaire   +1 more source

Performances of all optical logical gates for packet forwarding

2016 18th International Conference on Transparent Optical Networks (ICTON), 2016
This paper presents an all optical packet forwarding architecture composed of two optical logical gates namely the XOR gate and the AND gate. Error free operation is achieved at 160 Gbps for the AND logic gate as well as the forwarding architecture. And clear eyes diagrams are obtained.
Rim Farhat, Amel Farhat, Mourad Menif
openaire   +2 more sources

An All-Optical Programmable Logic Gate

Optical Computing, 1989
Experimental results are presented showing all-optical programmability and operation of a multi-function Boolean logic circuit. All eight symmetric two input logic functions have been demonstrated. Comments on the practical implementation and usage of this circuit are made.
R.G.A. Craig, G.S. Buller, F.A.P. Tooley, H. Ichikawa, S.D. Smith, A.C. Walker, B.S. Wherrett   +6 more
openaire   +1 more source

All-Optical Biomolecular Parallel Logic Gates With Bacteriorhodopsin

IEEE Transactions on Nanobioscience, 2004
All-optical two input parallel logic gates with bacteriorhodopsin (BR) protein have been designed based on nonlinear intensity-induced excited-state absorption. Amplitude modulation of a continuous wave (CW) probe laser beam transmission at 640 nm corresponding to the peak absorption of O intermediate state through BR, by a modulating CW pump laser ...
Parag, Sharma, Sukhdev, Roy
openaire   +2 more sources

Photonic-crystal-based all-optical NOT logic gate

Journal of the Optical Society of America A, 2015
In the present paper, we have utilized the concept of photonic crystals for the implementation of an optical NOT gate inverter. The designed structure has a hexagonal arrangement of silicon rods in air substrate. The logic function is based on the phenomenon of the existence of the photonic bandgap and resulting guided modes in defect photonic crystal ...
Brahm Raj, Singh, Swati, Rawal
openaire   +2 more sources

All-optical switching and all-optical logic gates based on bacteriorhodopsin

SPIE Proceedings, 2004
We demonstrate an all-optical switching using a bacteriorhodopsin (bR) film. The transmission of the bR film is investigated using the pump-probe method. A diode-pumped second harmonic YAG laser (λ = 532nm which is around the maximum initial B state absorption) was used as a pumping beam and a cw He-Ne laser (λ = 632 nm which is around the peaks of K ...
Huang, Yuhua, Wu, Shin Tson, Zhao, Youyuan   +2 more
openaire   +2 more sources