PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

Ferreira, A. C.; Coelho, A. G.; Sousa, J. R. R.; Sobrinho, C. S.; Magalhães, F. T. C. B.; Filho, A. F. G. F.; Guimarães, G. F.; Sales, Juscelino Chaves; Menezes, Jaileila de Araújo; Sombra, A. S. B.

doi:10.1016/j.optlastec.2015.09.002

Cited by 15 publications

(4 citation statements)

References 34 publications

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“…The XOR gates have more advanced and sophisticated applications in logic processing according to references [16,24,27,13,47]. The main idea was obtaining a fully optical logic component, not all logic gates.…”

Section: Resultsmentioning

confidence: 99%

All-optical XOR and OR by Mach-Zehnder Interferometer engineered photonic crystal fibers

Sales

Filho

Ferreira

et al. 2017

Optics & Laser Technology

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Section: Resultsmentioning

confidence: 99%

All-optical XOR and OR by Mach-Zehnder Interferometer engineered photonic crystal fibers

Sales

Filho

Ferreira

et al. 2017

Optics & Laser Technology

Self Cite

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“…Studies and applications for optical systems composed of one or more directional couplers can be found in the literature. Interferometric systems, such as Mach-Zehnder and Sagnac interferometers [3], [5], [9], [11], [36], [37], are common examples of devices with cascade couplers used to implement Boolean functions and/or logic gates. In particular, the works in [38]- [40] provide some applications under a linear regime.…”

Section: Optical Couplers Characteristicsmentioning

confidence: 99%

“…The decomposition (31) can be viewed as a special case of (11), due to the constraints on the structure of the core tensor W (1) and the factors K (2) and K (1) , as discussed in Subsection IV-A. These constraints play an important role for the parameter estimation and they will be taken into account in the estimation algorithm.…”

Section: Parameter Estimation Algorithmmentioning

confidence: 99%

“…After obtaining the estimate G under the matrix form G J 2 N 2 ×P 1 N 1 , other unfolded versions of G can be obtained by means of a reshaping operation (which corresponds to other combinations of modes). As G satisfies a generalized Tucker-(2, 4) decomposition similar to (11), one can exploit the unfoldings ( 13)-( 14) to derive estimators for W, K (2) and K (1) .…”

Section: A Als Estimationmentioning

confidence: 99%

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Optical Coupler Network Modeling and Parameter Estimation Based on a Generalized Tucker Train Decomposition

Rocha¹,

Magalhães

Favier

et al. 2022

IEEE Access

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Tensor models have been used extensively in signal processing applications to design different types of communication systems. This paper proposes, for the first time, the use of tensor models for optical communications. The signals of an optical dual-core coupler network are modeled as a multiway array (tensor), which satisfies a generalized Tucker train decomposition. This tensor model is then used to develop an estimation algorithm that enables the network parameters to be estimated from the input and output signals. The performance of this algorithm was evaluated by means of computer simulations, in terms of NMSE of the estimated parameters and convergence speed. For the tested configurations, good levels of NMSE with fast convergence were obtained, demonstrating the effectiveness of the proposed method as a promising tool for studying and designing optical devices, with a wide range of applications in the context of lightwave systems.

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Nonlinearity effect on dual photonic crystal fiber coupler for generating fully optical logic gates

Filho

Cavalcante

Beserra

et al. 2019

Micro & Optical Tech Letters

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In this work, we present a numerical investigation of the asymmetric double nonlinear coupling of photonic crystal fibers in an on‐off switch to obtain fully optical logic gates. Ultra‐short pulses (100 fs) are propagated through the device in three distinct excitation power regimes, power below critical (Po = 72 kW, where Po represents the excitation power of the device), critical power (Pc = 103.5 kW, where Pc represents critical Power for which the power switching is 50% for both guides. There are cases where Po is above the critical value, there are cases that is below), and power above critical (Po = 110 kW). The pulse switching characteristics are analyzed as a function of the input power and the nonlinearity profile (β‐beta) inserted in one of the component guides. The nonlinearity profiles follow the regimes: constant, increasing and decreasing, and high order effects, such as third‐order dispersion, intrapulse Raman scattering and self‐steepening are included in the generalized Schrödinger nonlinear equation governs the pulse propagation dynamics. The results show that the proposed device can be used to obtain AND, OR, and NOT logic gate. Numerical studies were done from the coupled‐coupled equations solved using the fourth‐order Runge‐Kutta method, using MATLAB as a programming tool for solving equations. The implementation of fully optical logic gates tends to revolutionize new digital systems in the field of data storage, such as optical memory, “replacement” of electronic circuits among other applications. Optical systems have a great advantage as they are free from electromagnetic interference and have high rates of data transmission.

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PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

Cited by 15 publications

References 34 publications

All-optical XOR and OR by Mach-Zehnder Interferometer engineered photonic crystal fibers

All-optical XOR and OR by Mach-Zehnder Interferometer engineered photonic crystal fibers

Optical Coupler Network Modeling and Parameter Estimation Based on a Generalized Tucker Train Decomposition

Nonlinearity effect on dual photonic crystal fiber coupler for generating fully optical logic gates

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