Exploració per tema "Àrees temàtiques de la UPC::Enginyeria electrònica::Optoelectrònica"
Ara es mostren els items 1-20 de 159
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3D polarized modulation: system analysis and performance
(2018-06-26)
Article
Accés obertIn this paper we present a novel modulation technique for dual polarization communication systems, which reduces the error rate compared with the existent schemes. This modulation places the symbols in a 3D constellation, ... -
A Methodology for investigating dust model performance using synergistic EARLINET/AERONET dust concentration retrievals
(2015-09-04)
Article
Accés obertSystematic measurements of dust concentration profiles at a continental scale were recently made possible by the development of synergistic retrieval algorithms using combined lidar and sun photometer data and the establishment ... -
A nanometric displacement measurement system using differential optical feedback interferometry
(2013-11-01)
Article
Accés restringit per política de l'editorial -
Adaptive autofocus technique for speckle control in optical feedback interferometry
(2014-09-01)
Article
Accés restringit per política de l'editorialAn adaptive autofocus technique for the control of speckle effect in optical feedback interferometry (OFI) is discussed. The beam spot size effect over the OFI signal is presented, justifying the proposed approach. An ... -
Aerosol characterization at the Saharan AERONET site Tamanrasset
(2014-01-01)
Article
Accés obertMore than 2 years of columnar atmospheric aerosol measurements (2006-2009) at the Tamanrasset site (22.79 degrees N, 5.53 degrees E, 1377 ma.s.l.), in the heart of the Sahara, are analysed. Aerosol Robotic Network (AERONET) ... -
Aerosol properties of the Eyjafjallajökull ash derived from sun photometer and satellite observations over the Iberian Peninsula
(2012-03-01)
Article
Accés restringit per política de l'editorialThe Eyjafjallajökull ash that crossed over Spain and Portugal on 6e12 May 2010 has been monitored by a set of operational sun photometer sites within AERONET-RIMA and satellite sensors. The sun photometer observations ... -
Analysis of a field conjugation adaptive array for coherent free-space optical links
(2010)
Text en actes de congrés
Accés obert -
Bandwidth-length trade-off figures of merit for electro-optic traveling wave modulators
(2013-05)
Article
Accés obertClosed-form expressions explicitly relating modulation bandwidth and active length in electro-optic traveling wave modulators are presented which fully account for skin-effect electrode loss and optical-electrical wave ... -
Blind adaptation of channel-matched receivers in free-space coherent laser communication
(The Optical Society (OSA), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialChannel-matched adaptive coherent receivers are implemented using aperture arrays. As an alternative to training-based channel estimation, we analyze the performance of sequential techniques for blind adaptation of ... -
Capacity of coherent free-space optical links ¿using diversity-combining techniques: errata
(2010-08-16)
Article
Accés obert -
Characterisation modelling and calibration of an electrothermal micromirror with 3DOF
(Universitat Politècnica de Catalunya, 2012)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorThe work presented as follows is the final project of my five years Industrial Engineering degree. It tries to make good use of the skills acquired along the degree as well as to learn new ones. The project is focused in ... -
Characterization of molecular orientation in super-resolution fluorescence microscopy
(Universitat Politècnica de Catalunya, 2012-09-06)
Projecte Final de Màster Oficial
Accés obertIn this thesis we aim to characterize the effect of molecular dipole orientation on the resolution of super-resolution fluorescence microscopy techniques that rely on single molecule detection and localization. -
Circuits de conversió optoelectrònica per a un bus de control per fibra òptica
(Universitat Politècnica de Catalunya, 2007-07-13)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autorEste proyecto forma parte de un sistema Lidar en el cual tenemos la necesidad de enviar unas señales binarias de control para ajustar los valores de ganancia y offset de unos receptores. En un sistema de estas características ... -
Classical simulation of restricted quantum computations
(Universitat Politècnica de Catalunya, 2013-09-09)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] We study restricted models of measurement-based quantum computation; and we investigate whether their output probability distributions can be sampled from efficiently on a classical computer. We find that even for ... -
Colorless FSK Demodulation and Detection With Integrated Fabry-Perot-Type SOA/REAM
(2010-06-01)
Article
Accés obertA receiver for optical frequency modulated signals, based on colorless demodulation and detection, is presented. An integrated combination of semiconductor optical amplifier (SOA) and reflective electroabsorption modulator ... -
Colourless FSK/ASK optical network unit based on a Fabry Pérot type SOA/REAM for symmetrical 10 Gb/s WDM-PONs
(2009-09-20)
Text en actes de congrés
Accés restringit per política de l'editorialAn Optical Network Unit based on colourless detection of optical frequency modulated signals based on a combination of Semiconductor Optical Amplifier and Reflective Electroabsorption modulator with intensity remodulation ... -
Comparison of an Adaptive Optics Vision Analyzer and a Hartmann-Shack Aberrometer for measuring ocular wave aberrations
(Universitat Politècnica de Catalunya, 2014-07-18)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] Measuring the ocular wavefront aberration function by means of the Hartmann-Shack technique is a common practice in visual optics. Nowadays several commercial devices provide this functionality; this is the reason ... -
Control adaptatiu en sistemes de mesura de llum difosa
(Universitat Politècnica de Catalunya / Escola Tècnica Superior d’Enginyeria Industrial de Barcelona, 2009-03)
Projecte/Treball Final de Carrera
Accés obertAquesta memòria mostra el modelat, les bases teòriques, el funcionament i els resultats del P.F.C. (Projecte Final de Carrera) “Modelització de superfícies per llum difusa”. El document està estructurat en tres parts: ... -
Control and enhancement of beam quality of broadarea semiconductor devices and arrays by multimode interference couplers and two-dimensional gain modulation
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés obertIt is proposed to control the beam quality of broad-area semiconductor devices by two-dimensional structuring enforcing phase coherence across the device. First results based on MMI couplers are presented. -
Control y mejoras del instrumento Sinton WCT-100 para medidas de tiempo de vida de los portadores en c-Si
(Universitat Politècnica de Catalunya, 2008-12-01)
Projecte/Treball Final de Carrera
Accés obert
Realitzat a/amb: Sinton InstrumentsEn los últimos diez años se ha producido un crecimiento global muy importante en el mercado fotovoltaico. El principal objetivo es reducir los costes de la generación fotovoltaica, de manera que resulte competitiva ...