Optooptic modulation based on gain saturation

Gray, Rebecca; Casperson, Lee W.

doi:10.1109/jqe.1978.1069712

Cited by 17 publications

(1 citation statement)

References 18 publications

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“…Figure 5 shows three optical primitives that realize the 2‐to‐1 multiplexer. In Figure 5, the input control signal that is used to change the electric properties of the devices can be thermal, acoustic, optical, or electrical (Gray and Casperson, 1978; Yariv, 1989). While thermal and acoustic control signals can impose slow changes of the electric properties of the material of the device, optical and electrical control signals can impose fast changes (Gray and Casperson, 1978; Yariv, 1989).…”

Section: Optical Realizations Of Two‐valued and Multiple‐valued Logicmentioning

confidence: 99%

Circuits form‐valued classical, reversible and quantum optical computing with application to regular logic design

Al‐Rabadi

2009

International Journal of Intelligent Computing and Cybernetics

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PurposeThe purpose of this paper is to introduce an approach for m‐valued classical and non‐classical (reversible and quantum) optical computing. The developed approach utilizes new multiplexer‐based optical devices and circuits within switch logic to perform the required optical computing. The implementation of the new optical devices and circuits in the optical regular logic synthesis using new lattice and systolic architectures is introduced, and the extensions to quantum optical computing are also presented.Design/methodology/approachThe new linear optical circuits and systems utilize coherent light beams to perform the functionality of the basic logic multiplexer. The 2‐to‐1 multiplexer is a basic building block in switch logic, where in switch logic a logic circuit is implemented as a combination of switches rather than a combination of logic gates as in the gate logic, which proves to be less‐costly in synthesizing wide variety of logic circuits and systems. The extensions to quantum optical computing using photon spins and the collision of Manakov solitons are also presented.FindingsNew circuits for the optical realizations of m‐valued classical and reversible logic functions are introduced. Optical computing extensions to linear quantum computing using photon spins and nonlinear quantum computing using Manakov solitons are also presented. Three new multiplexer‐based linear optical devices are introduced that utilize the properties of frequency, polarization and incident angle that are associated with any light‐matter interaction. The hierarchical implementation of the new optical primitives is used to synthesize regular optical reversible circuits such as the m‐valued regular optical reversible lattice and systolic circuits. The concept of parallel optical processing of an array of input laser beams using the new multiplexer‐based optical devices is also introduced. The design of regular quantum optical systems using regular quantum lattice and systolic circuits is introduced. New graph‐based quantum optical representations using various types of quantum decision trees are also presented to efficiently represent quantum optical circuits and systems.Originality/valueThe introduced methods for classical and non‐classical (reversible and quantum) optical regular circuits and systems are new and interesting for the design of several future technologies that require optimal design specifications such as super‐high speed, minimum power consumption and minimum size such as in quantum computing and nanotechnology.

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Section: Optical Realizations Of Two‐valued and Multiple‐valued Logicmentioning

confidence: 99%

Circuits form‐valued classical, reversible and quantum optical computing with application to regular logic design

Al‐Rabadi

2009

International Journal of Intelligent Computing and Cybernetics

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Intensity Fluctuation Correlations in Amplified Spontaneous Emission From a Cw-Excited High Gain Laser Amplifier

Adams

Abraham

1984

Coherence and Quantum Optics V

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Scope for an optical circulator in metrology

Danelyan¹,

Garibashvili²,

Kartvelishvili³

et al. 1997

Meas Tech

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An optical device is described that maintains undamped circulation of a single short light pulse in a closed loop. A circulator based on the latest fiber-optic components can be used as a frequency measure in the radio range and also for frequency measurement of distances, measurement of single pulse lengths, and so on.At the start of the 1970s, one of us proposed a model for an optical circulator, namely a device that maintains undamped circulation with the velocity of light for a short light pulse in a closed optical ring of a certain optical length. Such a circulator can handle various tasks in physics and metrology [1][2][3]. However, the suggestions remained unrealized at the time because of the lack of optical components with appropriate characteristics.Later, papers appeared [4-11] on optoelectronic oscillators similar to this circulator in which a feedback loop was employed containing a semiconductor diode or gas laser, a modulator for the current in the diode laser (or modulator for the gas laser intensity), a photocell, a linear electronic amplifier, and an optical delay (or an amplifier with time delay). The generators described in [4][5][6][7][8][9][10][11] differed from an optical circulator in that they were based on automodulation of continuous-wave laser radiation. Experiments with them showed how far their performance is restricted by the parameters of the electronic units (noise, response rates, frequency characteristics, sensitivity, and so on). This showed that the methods proposed in [1-3] could not be realized effectively on the basis of these optoelectronic generators.Recent advances in fiber optics and in single-mode fiber light guides with exceptionally low losses (0.15-0.2 dB/km at wavelengths of 1.3-1.6 #m [12]) can be used in conjunction with single-phase ultrawide-band fiber-optic amplifiers [13, 14] and other fiber-optic components to construct an optical circulator. We therefore briefly consider an optical circulator and describe some of its possibilities.The circulator operation can be understood from Fig. 1. We assume that a single short light pulse from the laser 1 passes through the beam splitters 2 into the closed loop formed by the beam splitter 2, prism 3, and mirror 4. Let the optical length of the loop be L o. If we assume that there is no energy loss from the light pulse in the loop, and if the propagation time in one transit of the closed loop exceeds the length of the pulse, one gets a pulse circulating with a period T O = L0/c and frequency f0 = To-1 = c/L0 ' in which c is the mean integral value for the group velocity of the pulse in the loop.However, there is an energy loss in the splitter 2 (minimum of 50%) and also on reflection from mirror 4 and passage through the prism 3. If the losses are not compensated, the circulation will cease after a few periods. To maintain continuous circulation, there is the optical amplifier (power amplifier) 5 as shown in Fig. 1.This circular poses two topics connected with the following: 1) providing an optical circuit of sufficien...

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Optooptic modulation based on gain saturation

Cited by 17 publications

References 18 publications

Circuits form‐valued classical, reversible and quantum optical computing with application to regular logic design

Circuits form‐valued classical, reversible and quantum optical computing with application to regular logic design

Intensity Fluctuation Correlations in Amplified Spontaneous Emission From a Cw-Excited High Gain Laser Amplifier

Scope for an optical circulator in metrology

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