Dr. Alexandre A. P. Pohl Profile

Dr. Alexandre A. P. Pohl

Professor at Univ Tecnológica Federal do Paraná

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Publications (10)

Proceedings Article | 23 April 2017 Paper

Multi-wavelength reflection spectra from an acousto-optic modulated fiber Bragg grating in a highly birefringent suspended core fiber

Ricardo Silva, Martin Becker, Manfred Rothhardt, Hartmut Bartelt, Alexandre A. Pohl

Proceedings Volume 10323, 103238P (2017) https://doi.org/10.1117/12.2265696

KEYWORDS: Fiber Bragg gratings, Acousto-optics, Modulation, Acoustics, Polarization, Reflectivity, Optical filters, Ferroelectric materials, Single mode fibers, Fiber lasers

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Proceedings Article | 28 September 2015 Paper

All-fiber laser mode-locked by the acousto-optic modulation of a fiber Bragg grating in suspended core fiber

Ricardo Silva, Tobias Tiess, Martin Becker, Tina Eschrich, Manfred Rothhardt, Matthias Jäger, Alexandre Pohl, Hartmut Bartelt

Proceedings Volume 9634, 963420 (2015) https://doi.org/10.1117/12.2194929

KEYWORDS: Fiber lasers, Mode locking, Fiber Bragg gratings, Modulation, Acoustics, Ferroelectric materials, Bragg cells, Modulators, Acousto-optics, Picosecond phenomena

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Proceedings Article | 17 October 2012 Paper

Characterization of longitudinal acoustic waves in a fiber using an extrinsic Fabry-Perot interferometer

Alexandre A. Pohl, Ricardo Silva

Proceedings Volume 8421, 84212T (2012) https://doi.org/10.1117/12.968806

KEYWORDS: Acoustics, Sensors, Fiber Bragg gratings, Head, Modulators, Fabry–Perot interferometry, Oscilloscopes, Acousto-optics, Ferroelectric materials, Silica

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Proceedings Article | 18 May 2011 Paper

Acousto-optic control of the LPG spectrum for sensing applications

John Canning, Roberson Oliveira, Rogério Nogueira, Carlos Bavastri, Ricardo Kamikawachi, Gustavo R. Possetti, Paulo Neves, Marcia Muller, José Fabris, Alexandre A. Pohl, Carlos A. Marques

Proceedings Volume 7753, 77538Y (2011) https://doi.org/10.1117/12.885101

KEYWORDS: Acoustics, Acousto-optics, Refractive index, Cladding, Modulation, Ferroelectric materials, Signal attenuation, Tunable filters, Laser resonators, Switching

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Proceedings Article | 17 May 2011 Paper

Fiber Fabry-Perot interferometer sensor for measuring resonances of piezoelectric elements

Alexandre Pohl, Roberson Oliveira, Ricardo da Silva

Proceedings Volume 7753, 775319 (2011) https://doi.org/10.1117/12.885858

KEYWORDS: Ferroelectric materials, Fabry–Perot interferometry, Sensors, Demodulation, Fiber optics sensors, Interferometry, Sensor calibration, Phase shifts, Spectrum analysis, Signal processing

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Proceedings Article | 9 September 2010 Paper

Acoustically modulated long period grating sensor for simultaneous viscosity and density measurement

Kevin Cook, Roberson Oliveira, Alexandre A. P. Pohl, John Canning, Masood Naqshbandi

Proceedings Volume 7653, 76530Y (2010) https://doi.org/10.1117/12.865334

KEYWORDS: Acoustics, Refractive index, Sensors, Modulation, Acousto-optics, Water, Optical fibers, Cladding, Silica, Signal attenuation

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Proceedings Article | 5 October 2009 Paper

Tuneable ring-DFB PCF laser for ultra-high resolution spectroscopy

J. Canning, Kevin Cook, A. A. Pohl, C. Poon

Proceedings Volume 7503, 75030Z (2009) https://doi.org/10.1117/12.835811

KEYWORDS: Absorption, Ferroelectric materials, Cladding, Tunable lasers, Spectroscopy, Fiber lasers, Modulation, Photonic crystal fibers, Polarization, Wavelength tuning

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Proceedings Article | 20 May 2009 Paper

Bragg grating writing in photonic crystal fibres

John Holdsworth, Kevin Cook, Alexandre A. Pohl, Nathaniel Groothoff, Michael Stevenson, Somnath Bandyopadhyay, John Canning

Proceedings Volume 7357, 73570H (2009) https://doi.org/10.1117/12.820588

KEYWORDS: Cladding, Photonic crystal fibers, Absorption, Fiber Bragg gratings, Germanium, Scattering, Luminescence, Ferroelectric materials, Liquids, Hydrogen

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Proceedings Article | 16 May 2008 Paper

Technique for estimating the tuning speed of fiber Bragg gratings

Roberson Oliveira, Alexandre A. Pohl, Paulo Neves, John Canning, Michael Stevenson, Nathaniel Groothoff

Proceedings Volume 7004, 70041I (2008) https://doi.org/10.1117/12.785769

KEYWORDS: Fiber Bragg gratings, Calibration, Transducers, Actuators, Spectrum analysis, Sensors, Oscilloscopes, Wavefront sensors, Time metrology, Optical filters

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Proceedings Article | 17 September 2005 Paper

Production and characterization of broad fibre Bragg gratings for photonic devices

Jean Cardoso da Silva, Rogério Nogueira, Hypolito Kalinowski, Fabiano Kuller, José Fabris, Alexandre A. Pohl, Paulo S. André

Proceedings Volume 5951, 595101 (2005) https://doi.org/10.1117/12.612920

KEYWORDS: Fiber Bragg gratings, Ultraviolet radiation, Hydrogen, Phase interferometry, Interferometers, Dispersion, Refractive index, Modulation, Single mode fibers, Reflectivity

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Showing 5 of 10 publications

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