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Presentation

Presentation

At CAP we perform R&D in applied photonics, principally focusing on optical fibre technology.

We are oriented towards applied research and development in optical fibre sources, optical fibre communication, optical fibre sensors and microfabrication (thin films and integrated optics).

Our group is always looking for opportunities for technology transfer to industrial companies using its specific competencies in optoelectronics and systems integration.

Latest News
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Interest Topics
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Featured Projects

INFANTE

Sistema de apresentação da "Maquete do Porto Mediaval", do Museu Casa do Infante

2017-2017

CORAL-TOOLS

CORAL – Sustainable Ocean Exploitation: Tools and Sensors

2016-2018

Femto3D

Fabricação tridimensional de dispositivos ópticos integrados por escrita directa com laser femtosegundo

2016-2017

CORAL-SENSORS

CORAL – Sustainable Ocean Exploitation: Tools and Sensors

2016-2018

STRONGMAR

STRengthening MARritime Technology Research Center

2016-2018

MarineEye

MarinEye - A prototype for multitrophic oceanic monitoring

2015-2017

ASCOS2015

9th Advanced Study Course on Optical Chemical Sensors

2015-2015

NanoStima-RL1

NanoSTIMA – Macro-to-Nano Human Sensing Technologies

2015-2018

VAMOS

Viable Alternative Mine Operating System

2015-2018

EYEFRY

Cooking oils degradation assessment system

2014-2015

GOPA

Environmental processes management and optimisation

2013-2014

Spin_Fonao

Magnetic-induced ferroelectricity unravelled through spin-phonon coupling

2013-2015

InCell

Optical fibre tweezers for single cell manipulation and analysis

2013-2014

SNIFFER

Sensor devices network for food supply chain security

2013-2016

Re-Learning

Human motor re-learning by sensor information fusion

2013-2013

ThermaMonitor

System based on optical fibre sensors to monitor temperature in electrical machines

2013-2014

Sensing

Network Sensing for Critical Systems Monitoring

2013-2015

Cyclops

Single-Pixel Imaging Lidar based on Compressive Sensing

2013-2014

SmartGrids

Smart Grids

2013-2015

Cooperation

Cooperation and Perception for Augmented Autonomy

2013-2015

Ecoal-MGT

Ecological Management of Coal Waste Piles

2012-2015

IORT

The effect of shielding on dose distributions in intra-operative electron radiotherapy: a Monte Carlo simulation study

2012-2015

E-Coli

Lab-on-a-chip: E.coli rapid detection

2012-2012

SPR

Plasmonics Based Fibre Optic Sensing with Enhanced Performance

2012-2014

WineBioCode

Biosensor Development for Wine Traceability in the Douro Region

2012-2015

NanoWires

Optical Fibre NanoWires

2012-2012

FLUOROCT

Dose distribution mapping and Monte Carlo simulations in CT-fluoroscopy

2011-2014

Wood

Numerical and experimental study of cohesive laws in bonded wood joints

2011-2014

AQUAMONITOR

Optical fiber sensors for water quality monitoring applied to the determination of dissolved carbon dioxide in aquaculture

2011-2013

Nanovalor

Pole of Competitiveness in Nanotechnology for the enhancement of R&D potential in the Euroregion Galicia-Northern Portugal

2011-2014

MicroNanoCarolina

Expanding activity in optics and optoelectronics: micro and nonofabrication technologies

2010-2012

Multiferroicos

Multiferroic and Magnetoelectric materials for spintronics: obstacles and interfaces

2010-2013

FIBDOSE

Fibre dosimeters for in vitro and in vivo dosimetry in External Radiotherapy and Brachytherapy

2010-2013

SmartCoat

Optical fibre sensors embedded in composite materials to monitor physical parameters

2010-2012

TECCON

Optical fibre sensors to supervise, control and protect electric power systems

2010-2013

SensEFil

Monitoring filament wound vessels using optical sensors embedded in composite reinforcement

2010-2012

MCP

Antibacterial and osteogenic behaviour of Modified Calcium Phosphates (MCP): in vitro and in vivo evaluation

2010-2013

Hybrid

Hybrid electro-optical microfluidic device for single cell analysis

2010-2013

WaveTune

Monitoring systems based on optical fibre technology

2010-2011

SensingVed

Intelligent monitoring system based on sensor networks

2010-2010

Microphyte

Sensors for a new and more competitive bioprocess for the production of hydrogen

2010-2013

SensKanoe

Sensing systems applied to canoes

2009-2012

Mobiles

Sustainable electric mobility - Solutions for the logistics associated with electric vehicle battery charging

2009-2012

TunLas

Optical fibre tunable lasers

2009

SkateMus

Music generation from skater movements

2009-2009

Memimetria

System to measure the thickness of materials using interferometric imaging setups

2008-2010

Biomotion

Perception of biological motion - integrating psychophysics, neurophysiology and computational modeling

2008-2012

Bioswim

Body Interface System based on Wearable Integrated Monitoring

2008-2011

Endurance

Optical fibre Bragg sensors to monitor structures in Civil Engineering

2008-2010

Nanocrystalline

Glass Ceramics with Non Linear Optical Properties

2008-2011

AmdraphydII

Advanced Monitoring and Diagnosis of the Physical Dynamics of the Estuary of Aveiro

2008-2009

Oreo2

Self-patternable organic/inorganic hybrids for low cost integrated optics devices

2008-2010

SenRONS

Optical fibre sensors to determine reactive oxygen and nitric oxide in biological systems

2008-2011

Motion

Monitoring and compensaTion of Impairments in Optical Networks

2007-2010

Welding

Optical fibre Bragg sensors for friction stir welding (FSW) and laser beam welding (LBW) modeling

2007-2009

Biopelvic

Study of Female Pelvic Floor Disorders

2007-2010

Optic-Algae

Hybrid photobioreactors containing microstructured optical fibres for operations with microalgae

2007-2010

SmartBio

HIP Femoral Prosthesis for in vivo loosening data acqusition

2007-2010

NextGenPCF

Next Generation Photonic Crystal Fibres

2006-2009

Team
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Laboratories

Laboratory of Microfabrication

Imaging Laboratory

Laboratory of sensors

Chemistry Sensors Laboratory

Publications

CAP Publications

View all Publications

2018

Temperature independent refractive index measurement using a fiber Bragg grating on abrupt tapered tip

Authors
Gomes, AD; Silveira, B; Warren Smith, SC; Becker, M; Rothhardt, M; Frazão, O;

Publication
Optics and Laser Technology

Abstract
A fiber Bragg grating was inscribed in an abrupt fiber taper using a femtosecond laser and phase-mask interferometer. The abrupt taper transition allows to excite a broad range of guided modes with different effective refractive indices that are reflected at different wavelengths according to Bragg's law. The multimode-Bragg reflection expands over 30 nm in the telecom-C-band. This corresponds to a mode-field overlap of up to 30% outside of the fiber, making the device suitable for evanescent field sensing. Refractive index and temperature measurements are performed for different reflection peaks. Temperature independent refractive index measurements are achieved by considering the difference between the wavelength shifts of two measured reflection peaks. A minimum refractive index sensitivity of 16 ± 1 nm/RIU was obtained in a low refractive index regime (1.3475–1.3720) with low influence of temperature (-0.32 ± 0.06 pm/°C). The cross sensitivity for this structure is 2.0 × 10-5 RIU/°C. The potential for simultaneous measurement of refractive index and temperature is also studied. © 2017 Elsevier Ltd

2018

Applying high-resolution melting (HRM) technology to olive oil and wine authenticity

Authors
Pereira, L; Gomes, S; Barrias, S; Fernandes, JR; Martins Lopes, P;

Publication
Food Research International

Abstract
Olive oil and wine production have a worldwide economic impact. Their market reliability is under great concern because of the increasing number of fraud and adulteration attempts. The need for a traceability system in all its extension is crucial particularly for the cases of olive oils and wines with certified labels, in which only a limited number of olives and grapevine varieties, respectively, are allowed in a restricted well-defined geographical area. Molecular markers have been vastly applied to the food sector, and in particular High-Resolution DNA Melting technology has been successfully applied for olive oil and wine authentication, as part of the traceability system. In this review, the applications of HRM and their usefulness for this sector considering, Safety, Security and Authenticity will be reviewed. A broad overview of the HRM technique will be presented, focusing on the aspects that are crucial for its success, in particular the new generation of fluorescent dsDNA dyes used for amplicon detection and quantification, and the data analysis. A brief outlook on the olive oil and wine authenticity procedures, based on new DNA technology advances, and in which way this may influence the future establishment of a traceability system will be discussed. © 2017 Elsevier Ltd

2017

Mitigation in the Very Short-term of Risk from Wind Ramps with Unforeseen Severity

Authors
Pinto, M; Miranda, V; Saavedra, O; Carvalho, L; Sumaili, J;

Publication
JOURNAL OF CONTROL AUTOMATION AND ELECTRICAL SYSTEMS

Abstract
This paper addresses a critical analysis of the impact of the wind ramp events with unforeseen magnitude in power systems at the very short term, modeling the response of the operational reserve against this type of phenomenon. A multi-objective approach is adopted, and the properties of the Pareto-optimal fronts are analyzed in cost versus risk, represented by a worst scenario of load curtailment. To complete this critical analysis, a study about the usage of the reserve in the event of wind power ramps is performed. A case study is used to compare the numerical results of the models based on stochastic programming and models that take a risk analysis view in the system with high level of wind power. Wind power uncertainty is represented by scenarios qualified by probabilities. The results show that the reliability reserve may not be adequate to accommodate unforeseen wind ramps and therefore the system may be at risk.

2017

Successful Large-scale Renewables Integration in Portugal: Technology and Intelligent Tools

Authors
Miranda, V; University of Porto,;

Publication
CSEE JOURNAL OF POWER AND ENERGY SYSTEMS

Abstract
Portugal is seen worldwide as a case of success in the large-scale integration of renewables in its power system, especially for wind power. Consistent policies and sound management decisions are fundamental, but a sustainable process is not possible without the development of endogenous knowledge. This paper summarizes a set of models, both applied by the industry and representing actual technologic advancement, denoting the context of research and innovation in the country that helps to explain such success. Novelties arise in reliability assessment for systems with renewables, active and reactive power control, integration of wind farms, storage, electric vehicle integration, wind and solar power forecasting and distribution operation and state estimation taking advantage of smart grid structures. In all cases, one relevant trait is evident: the pervasive use of computational intelligence tools.

2017

Mean shift densification of scarce data sets in short-term electric power load forecasting for special days

Authors
Rego, L; Sumaili, J; Miranda, V; Frances, C; Silva, M; Santana, A;

Publication
ELECTRICAL ENGINEERING

Abstract
Short-term load forecasting plays an important role to the operation of electric systems, as a key parameter for planning maintenances and to support the decision making process on the purchase and sale of electric power. A particular case in this respect is the consumption forecasting on special days, which can be a complex task as it presents unusual load behavior, when compared to regular working days. Moreover, its reduced number of samples makes it hard to properly train and validate more complex and nonlinear prediction algorithms. This paper tackles this problem by proposing a new approach to improve the accuracy of the predictions amidst existing special days, employing an Information Theoretic Learning Mean Shift algorithm for pattern discovery, classifying and densifying the available scarce consumption data. The paper describes how this methodology was applied to an electrical load forecasting problem in the northern region of Brazil, improving the previously obtained accuracy held by the power company.

Supervised Theses

2016

Estudo de adulteração de carne e peixe fresco

Author
Maria João Moreira

Institution
UTAD

2016

Optical fiber tools for single cell trapping and manipulation

Author
Ana Rita da Silva Rodrigues Ribeiro

Institution
UP-FCUP

2016

Focused ion beam milling of optical fiber microstructures for sensing applications

Author
Ricardo Melo André

Institution
UP-FCUP

2016

A numerical approach into new designs for SPR sensors in D-type optical fibers

Author
Diego Felipe de Nóbregra dos Santos

Institution
UMa

2016

Sensors based on Taper Device for Knot Configuration

Author
André Gomes

Institution
UP-FCUP

Facts & Figures

9Academic Staff

2017

2R&D Employees

2017

Contacts