Coherent Optical Logic by Laser Amplifiers With Feedback

An optical decision circuit is constructed by modifying the stability conditions of a previously introduced optical flip-flop memory (Appl. Phys. Lett., vol. 88, p. 181 118, May 2005). The simulations using a rate-equation model of the circuit predict fast operation speed (rise and fall times of the...

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Bibliographic Details
Published inJournal of lightwave technology Vol. 24; no. 12; pp. 4918 - 4924
Main Authors Oksanen, J., Tulkki, J.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.12.2006
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Amplifiers
Applied sciences
Circuit properties
Circuits
Coherent feedback
decision circuit
Digital circuits
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Flip-flops
Gates (circuits)
Interferometers
Laser feedback
Laser modes
Lasers
Logic
Magnetic and optical mass memories
Mathematical models
Optical amplifiers
Optical feedback
Optical interferometry
optical logic
optical transistor
Predictive models
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Semiconductor optical amplifiers
Semiconductors
Stimulated emission
Storage and reproduction of information
Transistors
Rise time
Optical logic
Reaction amplifier
Interferometer
Laser feedback
Optical memory
Feedback regulation
Logic gate
Bistable
Stability criterion
Fast circuit
Optical circuit
Logic circuit
Simulation
Coherent feedback
Rate equation
Optical transistor
Decision circuit
Amplifier laser
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Summary:An optical decision circuit is constructed by modifying the stability conditions of a previously introduced optical flip-flop memory (Appl. Phys. Lett., vol. 88, p. 181 118, May 2005). The simulations using a rate-equation model of the circuit predict fast operation speed (rise and fall times of the order of 20 ps are reached), which is most likely beyond the capabilities of recent semiconductor decision circuits that are suitable for integration (J. Lightw. Technol., vol. 24, p. 642, Mar. 2005). The decision characteristics are also better and close to the ideal digital response. They also enable realizing optical logic gates by using an interferometer and a single decision circuit. The output characteristics of an and and an or gate realized using the decision circuit are also studied
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2006.884538