Author
Pietro Ferraro
Other affiliations: Aeritalia, Centre national de la recherche scientifique, Olivetti ...read more
Bio: Pietro Ferraro is an academic researcher from National Research Council. The author has contributed to research in topics: Digital holography & Holography. The author has an hindex of 61, co-authored 653 publications receiving 12666 citations. Previous affiliations of Pietro Ferraro include Aeritalia & Centre national de la recherche scientifique.
Papers published on a yearly basis
Papers
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01 Jan 2014
TL;DR: In this article, the authors show that Digital Holography is a reliable technique allowing a clear coherent imaging of the specimens through turbid fluids at Lab on a Chip scale, which is not achievable with any other imaging methods.
Abstract: Optical imaging of microscopic objects in transparent media is well assessed and deeply exploited [1]. However, if the object under analysis is dipped into a turbid medium, its imaging through conventional optics is hindered due to the strong scattering of the colloidal particles, thus severely degrading image quality. Even if initially the fluid is transparent, but becomes turbid by effect of a whatever chemical reaction or mixing, the processes cannot be observed. Here we show that Digital Holography is a reliable technique allowing a clear coherent imaging of the specimens through turbid fluids at Lab on a Chip scale, which is not achievable with any other imaging methods.
17 Jun 2007
TL;DR: In this article, a single-mode FBGFP sensor is used to interrogate a PDH lock and a polarization-spectroscopy scheme, which extends the idea of Hansch et al. and exploits the internal fiber birefringence and the additional bireringence induced by the grating-inscription process.
Abstract: In this work, we have devised different ways to interrogate a single-mode FBGFP sensor, based on both the PDH lock and a polarization-spectroscopy scheme, which extends the idea of Hansch et al. and exploits the internal fiber birefringence and the additional birefringence induced by the grating-inscription process.
25 Jul 2016
TL;DR: Red Blood Cells behave as micro-lenses with specific focal lengths, magnification and tunability properties, and wavefront analysis is performed in analogy to adaptive optics principles to characterize RBC healthy conditions.
Abstract: Red Blood Cells behave as micro-lenses with specific focal lengths, magnification and tunability properties. Wavefront analysis is performed in analogy to adaptive optics principles to characterize RBC healthy conditions. Diagnostic applications are a future perspective
08 Jun 2011
TL;DR: In this article, the retrieved wavefront is folded in order to subtract the area outside the micro-fluidic channel from the area where the sample is, which is called digital self-referencing.
Abstract: A numerical method to easily obtain a quantitative phase map of objects flowing in micro-fluidic devices using a digital holographic microscope is shown. The presented technique is called digital self-referencing because the retrieved wavefront is folded in order to subtract the area outside the micro-fluidic channel from the area where the sample is.
TL;DR: In this article, it was shown that sharp imaging is possible in microfluidics in flowing turbid media by digital holography, i.e., biological cells in micro-fluidic channels, in flowing liquids with suspended colloidal particles.
Abstract: We show that sharp imaging is possible in microfluidics in flowing turbid media by digital holography. Imaging results are demonstrated for phase objects, i.e. biological cells in microfluidic channels, in flowing liquids with suspended colloidal particles.
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Journal Article•
28,685 citations
Journal Article•
TL;DR: In this article, a fast Fourier transform method of topography and interferometry is proposed to discriminate between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour generation techniques.
Abstract: A fast-Fourier-transform method of topography and interferometry is proposed. By computer processing of a noncontour type of fringe pattern, automatic discrimination is achieved between elevation and depression of the object or wave-front form, which has not been possible by the fringe-contour-generation techniques. The method has advantages over moire topography and conventional fringe-contour interferometry in both accuracy and sensitivity. Unlike fringe-scanning techniques, the method is easy to apply because it uses no moving components.
3,742 citations
TL;DR: In this paper, the authors review the recent developments in the area of optical fiber grating sensors, including quasi-distributed strain sensing using Bragg gratings, systems based on chirped gratings and intragrating sensing concepts.
Abstract: We review the recent developments in the area of optical fiber grating sensors, including quasi-distributed strain sensing using Bragg gratings, systems based on chirped gratings, intragrating sensing concepts, long period-based grating sensors, fiber grating laser-based systems, and interferometric sensor systems based on grating reflectors.
3,665 citations