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Imaging properties of phase-shifting apodizersImaging properties of phase-shifting apodizers
(Revista Mexicana de Física, 2009)
Technique to combine images produced by different propagation modes of guided waves for damage detection and contrast improvement in plate-like structures
(2012-12-01)
This paper describes an image compounding technique based on the use of different apodization functions, the evaluation of the signals phases and information from the interaction of different propagation modes of Lamb waves ...
Technique to combine images produced by different propagation modes of guided waves for damage detection and contrast improvement in plate-like structures
(2012-12-01)
This paper describes an image compounding technique based on the use of different apodization functions, the evaluation of the signals phases and information from the interaction of different propagation modes of Lamb waves ...
High depth of focus by combining annular lenses
(Elsevier Science, 2006-12)
In some technological applications, optical systems that produce a high depth of focus and superresolving transversal responses are required. In this paper we present a pupil design consisting in a phase pupil with binary ...
Image enhancement by spatial frequency post-processing of images obtained with pupil filters
(Elsevier Science, 2016-06)
The use of apodizing or superresolving filters improves the performance of an optical system in different frequency bands. This improvement can be seen as an increase in the OTF value compared to the OTF for the clear ...
Improvement of performance in FFH-OCDMA systems by using strong apodized fiber Bragg gratings
(SPIE-INT SOC OPTICAL ENGINEERING, 2004-01-01)
This paper shows simulations of an all-fiber fast optical code division multiple access communications system (OCDMA), using strong apodized fiber Bragg gratings (FBGs) arrays as passive encoding-decoding devices. Auto and ...
Improvement of performance in FFH-OCDMA systems by using strong apodized fiber Bragg gratings
(SPIE-INT SOC OPTICAL ENGINEERING, 2004-01-01)
This paper shows simulations of an all-fiber fast optical code division multiple access communications system (OCDMA), using strong apodized fiber Bragg gratings (FBGs) arrays as passive encoding-decoding devices. Auto and ...
A contralateral eye study comparing apodized diffrative and full diffrative lenses: wavefront analysis and distance and near uncorrected visual acuity
(Faculdade de Medicina / USP, 2009)
PURPOSE: To evaluate intraindividual visual acuity, wavefront errors and modulation transfer functions in patients implanted with two diffractive multifocal intraocular lenses. METHODS: This prospective study examined 40 ...
Optimization of Fiber Bragg Grating for sidelobe reduction of reflectivity
(Institute of Electrical and Electronic Engineers (IEEE), 2022)