Results 241 to 250 of about 3,636,883 (285)

Optical logic gates employing liquid crystal optical switches

Applied Optics, 1987
This paper describes very simple optical logic gates consisting of liquid crystal optical switches. This technique was used to implement all possible 2-operand Boolean functions. The importance of these systems in making optical computers is discussed in terms of a binary half-adder and a flip-flop. A new algebra governing the function of these systems
A H, Khan, U R, Nejib
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Optical Logic Gate Design Considerations

SPIE Proceedings, 1988
Present photonic systems involve communication and information processing applications in which optical signals are generated, modulated, transmitted, and detected and then transformed to electrical form for final use. All optical signal processing systems for both optical communications and optical computing have tremendous potential for dramatically ...
M. A. Mentzer, D. H. Nacrhski
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Optical gating and logic with pyroelectric crystals

Applied Physics Letters, 1974
Optical gating with LiTaO3 single crystals is demonstrated using an absorbing LiTaO3:Cr detector directly coupled to a LiTaO3 electro-optic modulator. Since no electrical power is required, such a gating scheme provides a simple basis for optical logic in pyroelectric waveguides.
A. M. Glass, T. J. Negran
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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
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Invertible all-optical logic gate on chip

Optics Letters
We demonstrate an invertible all-optical gate on chip, with the roles of control and signal switchable by slightly adjusting their relative arrival time at the gate. It is based on the quantum Zeno blockade (QZB) driven by sum-frequency generation (SFG) in a periodically poled lithium niobate microring resonator.
Zhan Li, Jiayang Chen, Yongmeng Sua, Zhaohui Ma, Chao Tang, Yu-Ping Huang   +5 more
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Pattern Recognition and Logic with Optical Gates

Topical Meeting on Optical Computing, 1985
Threshold logic has traditionally been reserved for purely academic considerations related to the theory of switching functions. Modern VLSI circuitry is ill-suited to the implementation of threshold logic devices and relies exclusively on simple gates for its computational power. Recent developments in integrated optics have shown1 that it is possible
M. H. Hassoun, R. Arrathoon
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Logic gates based on optical transistors

Journal of Optical Communications, 2021
Abstract In this paper a simple and novel scheme to develop optical logic gates for fast switching. This can be obtained by sending two laser beams coaxially through nonlinear media with saturating nonlinearity. The nonlinearity in the optical properties on the medium is assumed to be cubic quintic nonlinearity.
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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
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Logical gates realized by optical tunnelling

2001 International Semiconductor Conference. CAS 2001 Proceedings (Cat. No.01TH8547), 2002
The advantages which result from combining electronic and optical elements, integrated on a common semiconductor substrate led to the manufacturing of integrated optoelectronical circuits on a large industrial scale. In this paper, the authors present from theoretical point of view, the realization by integrated optoelectronic technology of some ...
V. Degeratu, P. Schiopu, S. Degeratu
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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