A5021451772- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Retinal Diseases and Treatments
- Cerebrovascular and Carotid Artery Diseases
- Advanced Fiber Optic Sensors
- Laser-Matter Interactions and Applications
- Wireless Communication Networks Research
- Venous Thromboembolism Diagnosis and Management
- Chemistry Education and Research
- Cerebral Venous Sinus Thrombosis
- Optical Coherence Tomography Applications
- Blind Source Separation Techniques
- Tensor decomposition and applications
- Science and Education Research
Universidade Federal do Ceará
2022
Instituto Federal de Educação, Ciência e Tecnologia do Ceará
2015-2018
Universidade Federal de São Paulo
2009-2010
In this work, we present a numerical study to investigate the transmission, extinction ratio, crosstalk and compression factor outputs of Mach–Zehnder interferometer in photonic crystal fibers by varying nonlinearity parameter fiber from β = 1 2 for three different profiles (constant, increasing decreasing) scenarios (P 0 Pc, P < Pc > Pc). We observed that highest transmission (T 67%), ratio (XR 3.57 dB) lowest (Xtalk -5.25 occurred third scenario 110 kW Pc) considering decreasing...
In this work, we studied the behavior of Sagnac interferometer powered by a CW signal and under nonlinear effects self-phase modulation, cross-phase Raman, in two configurations (balanced unbalanced) five scenarios (by varying value Raman fraction). balanced configuration, observed that presence effect loop changes curves transmissivity reflectivity device, but only components generated (Stokes waves) are switched to transmitted port. unbalanced obtained an oscillating as for reflectivity,...
Simulating the propagation of optical pulses in a single mode fiber is fundamental importance for studying several effects that may occur within such medium when it under some linear and nonlinear effects. In this work, we simulate by implementing Schrödinger equation using Split-Step Fourier method its approaches. Then, compare their running time, algorithm complexity accuracy regarding energy conservation pulse. We note simple to implement presents good results conservation, besides low...
In this work, we investigated the optical switching process for three shapes of femtosecond pulses (soliton, Gaussian and super-Gaussian) propagating inside a symmetrical dual-core non-linear directional coupler by simulating their propagation via coupled Schrödinger equations. all simulations, considered dispersive effects second third order, besides self-phase modulation self-steepening effects. We studied scenarios each pulse under investigation. first scenario, added only cross-phase...
O presente trabalho pretende elucidar, por meio de uma abordagem didática e simplificada, as aplicações do conceito massa reduzida em problemas física envolvendo energia um sistema isolado com dois corpos, dada a deficiência tal análise materiais didáticos. 
 Palavras-chave: Energia, massa-reduzida, física.
Tensor models have been used extensively in signal processing applications to design different types of communication systems. This paper proposes, for the first time, use tensor optical communications. The signals an dual-core coupler network are modeled as a multiway array (tensor), which satisfies generalized Tucker train decomposition. model is then develop estimation algorithm that enables parameters be estimated from input and output signals. performance this was evaluated by means...