Prof. Antonio d'Alessandro Profile

Prof. Antonio d'Alessandro

Professor at Sapienza University of Rome

SPIE Involvement:

Conference Program Committee | Author

Publications (19)

Proceedings Article | 29 August 2019 Paper

Optical waveguides and tunable devices made of a liquid crystal core in PDMS channels

Antonio d'Alessandro, Luca Civita, Rita Asquini, Cesare Chiccoli, Paolo Pasini

Proceedings Volume 11092, 110920W (2019) https://doi.org/10.1117/12.2530293

KEYWORDS: Brain-machine interfaces

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Proceedings Article | 1 September 2017 Paper

Voltage- and temperature- controlled LC:PDMS waveguide channels

Katarzyna Rutkowska, Rita Asquini, Antonio d'Alessandro

Proceedings Volume 10455, 104550X (2017) https://doi.org/10.1117/12.2283028

KEYWORDS: Channel waveguides, Waveguides, Liquid crystals, Microfluidics

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Proceedings Article | 11 March 2015 Paper

Liquid crystal waveguide technologies for a new generation of low-power photonic integrated circuits

Antonio d'Alessandro, Luca Martini, Luca Civita, Romeo Beccherelli, Rita Asquini

Proceedings Volume 9384, 93840L (2015) https://doi.org/10.1117/12.2078891

KEYWORDS: Waveguides, Liquid crystals, Silicon, Polarization, Refractive index, Electro optics, Integrated optics, Glasses, Light wave propagation, Silica

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Proceedings Article | 12 September 2013 Paper

Tunable photonic devices based on liquid crystals and composites

R. Asquini, A. d'Alessandro

Proceedings Volume 8828, 88280T (2013) https://doi.org/10.1117/12.2025147

KEYWORDS: Liquid crystals, Electrodes, Refractive index, Optical filters, Waveguides, Modulation, Glasses, Electro optics, Tunable filters, Polymers

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SPIE Journal Paper | 1 July 2011

Integrated Bragg reflectors in low-index media: enabling strategies for wavelength tunability in electro-optic liquid crystals

Rita Asquini, Giovanni Gilardi, Antonio d'Alessandro, Gaetano Assanto

OE, Vol. 50, Issue 07, 071108, (July 2011) https://doi.org/10.1117/12.10.1117/1.3559210

KEYWORDS: Electrodes, Liquid crystals, Refractive index, Reflectors, Modulation, Electro optics, Light wave propagation, Reflectivity, Waveguides, Glasses

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Proceedings Article | 18 August 2010 Paper

Nonlinear switching of near infrared light in liquid crystal on silicon channel waveguides

Antonio d'Alessandro, Rita Asquini, Marco Trotta, Romeo Beccherelli

Proceedings Volume 7775, 777510 (2010) https://doi.org/10.1117/12.861763

KEYWORDS: Liquid crystals, Waveguides, Silicon, Silica, Refractive index, Switching, Light wave propagation, Channel waveguides, Electro optics, Geometrical optics

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Proceedings Article | 18 May 2010 Paper

Tunable integrated optical filters based on sapphire microspheres and liquid crystals

Giovanni Gilardi, Hasan Yilmaz, Mohammed Sharif Murib, Rita Asquini, Antonio d'Alessandro, Ali Serpengüzel, Romeo Beccherelli

Proceedings Volume 7719, 77191E (2010) https://doi.org/10.1117/12.855978

KEYWORDS: Liquid crystals, Refractive index, Optical spheres, Waveguides, Glasses, Sapphire, Optical filters, Finite element methods, Integrated optics, Tunable filters

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Proceedings Article | 12 June 2007 Paper

Switches and tunable filters based on ring resonators and liquid crystals

Carmen Vázquez, Pedro Contreras, Julio Montalvo, José Manuel Sánchez Pena, Antonio d'Alessandro, Domenico Donisi

Proceedings Volume 6593, 65931F (2007) https://doi.org/10.1117/12.722058

KEYWORDS: Resonators, Liquid crystals, Waveguides, Switches, Tunable filters, Refractive index, Integrated optics, Silicon, Demultiplexers, Numerical simulations

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Proceedings Article | 15 October 2004 Paper

Integrated optic devices using liquid crystals: design and fabrication issues

Antonio d'Alessandro, Rita Asquini, Robert Bellini, Domenico Donisi, Romeo Beccherelli

Proceedings Volume 5518, (2004) https://doi.org/10.1117/12.560034

KEYWORDS: Waveguides, Liquid crystals, Polymers, Refractive index, Switches, Integrated optics, Electrodes, Glasses, Polarization, Optical filters

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Proceedings Article | 5 January 2004 Paper

Performance optimization of optical switches in ferroelectric liquid crystals and polymers operating at 1550 nm

Rita Asquini, Claudio Gizzi, Romeo Beccherelli, Antonio d'Alessandro

Proceedings Volume 5213, (2004) https://doi.org/10.1117/12.506844

KEYWORDS: Waveguides, Polymers, Liquid crystals, Refractive index, Optical switching, Switches, Ferroelectric LCDs, Channel waveguides, Polymer multimode waveguides, Switching

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Proceedings Article | 14 August 2003 Paper

Experimental evaluation of an all-optical cross-connect based on micro-electro-mechanical system switches

Rita Asquini, Rita Mancini, Antonio d'Alessandro, Margherita Valentino, Mario Signorazzi, Gaetano Vespasiano

Proceedings Volume 5246, (2003) https://doi.org/10.1117/12.511253

KEYWORDS: Switches, Switching, Optical fibers, Mirrors, Eye, Signal attenuation, Microelectromechanical systems, Wavelength division multiplexing, Polarization, Channel projecting optics

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Proceedings Article | 14 August 2003 Paper

Design of a wideband tunable AWG using electro-optic polymers and push-pull electrode configuration for ultrafast photonic switching applications

Rita Asquini, Antonio d'Alessandro, Andrea Salusti, Claudio Gizzi

Proceedings Volume 5246, (2003) https://doi.org/10.1117/12.511274

KEYWORDS: Waveguides, Electrodes, Electro optics, Polymers, Electro optic polymers, Refractive index, Silicon, Phase shifts, Switching, Thermal optics

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Proceedings Article | 1 February 1998 Paper

Anchoring conditions for different aligning materials from dielectric behavior of SSFLC cells

M. Wnek, J. Moscicki, A. d'Alessandro, F. Campoli, P. Maltese, M. Buivydas, M. Matuszczyk, T. Matuszczyk, Sven Lagerwall

Proceedings Volume 3318, (1998) https://doi.org/10.1117/12.300031

KEYWORDS: Dielectrics, Electrodes, Capacitance, Liquid crystals, Polymers, Actinium, Ferroelectric LCDs, Absorption, Dielectric polarization, Resistance

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Proceedings Article | 1 February 1998 Paper

Influence of alignment techniques on switching behavior of SSFLC cells

A. d'Alessandro, V. Ferrara, F. Campoli, P. Maltese, T. Matuszczyk, M. Matuszczyk, Sven Lagerwall

Proceedings Volume 3318, (1998) https://doi.org/10.1117/12.299946

KEYWORDS: Switching, Electro optical modeling, Electro optics, Time metrology, Bistability, Polymers, Optical alignment, Transmittance, Computer simulations, Data modeling

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Proceedings Article | 2 June 1994 Paper

Devices for wavelength switching in optical networks

Antonio d'Alessandro, David Smith, Jane. Baran

Proceedings Volume 2144, (1994) https://doi.org/10.1117/12.177227

KEYWORDS: Acousto-optics, Switches, Polarization, Acoustics, Adaptive optics, Waveguides, Channel projecting optics, Optical networks, Lithium niobate, Switching

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Proceedings Article | 1 March 1991 Paper

All-optical Ti:LiNbO3 waveguide switch

Antonio d'Alessandro, Marco De Sario, Antonella D'Orazio, Vincenzo Petruzzelli

Proceedings Volume 1378, (1991) https://doi.org/10.1117/12.25047

KEYWORDS: Waveguides, Switching, Refractive index, Dielectric polarization, Switches, Dispersion, Nonlinear optics, Wave propagation, Dielectrics, Crystals

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Proceedings Article | 1 March 1991 Paper

Integrated optics temperature sensor

Antonio d'Alessandro, Marco De Sario, Antonella D'Orazio, Vincenzo Petruzzelli

Proceedings Volume 1399, (1991) https://doi.org/10.1117/12.26101

KEYWORDS: Temperature metrology, Waveguides, Integrated optics, Sensors, Temperature sensors, Phase shifts, Interferometers, Refractive index, Polarization, Electro optics

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Proceedings Article | 1 February 1991 Paper

Integrated optics displacement sensor

Antonio d'Alessandro, Marco De Sario, Antonella D'Orazio, Vincenzo Petruzzelli

Proceedings Volume 1366, (1991) https://doi.org/10.1117/12.24708

KEYWORDS: Sensors, Waveguides, Integrated optics, Refractive index, Fiber optics, Reliability, Phase shifts, Dielectrics, Channel waveguides, Environmental sensing

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Proceedings Article | 1 January 1991 Paper

Design criteria of an integrated optics microdisplacement sensor

Antonio d'Alessandro, Marco De Sario, Antonella D'Orazio, Vincenzo Petruzzelli

Proceedings Volume 1332, (1991) https://doi.org/10.1117/12.51105

KEYWORDS: Sensors, Waveguides, Integrated optics, Refractive index, Optical testing, Beam propagation method, Phase shifts, Mirrors, Optical inspection, Magnetic sensors

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Showing 5 of 19 publications

Conference Committee Involvement (1)

Liquid Crystals Optics and Photonic Devices

8 April 2024 | Strasbourg, France

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