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    Facts & Numbers
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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

    Ten INESC TEC researchers among the most influential worldwide

    Ten INESC TEC researchers are among the top-cited academics worldwide, part of the top 2% in their respective fields, according to a ranking developed by researchers from Stanford University (U.S.A.), and published in late 2020.

    26th April 2021

    Networked Intelligent Systems

    INESC TEC researcher awarded at the Optics and Photonics for Scientific Progress 2021 conference

    The work presented by Paulo Robalinho, researcher at INESC TEC’s Centre for Applied Photonics (CAP), was acknowledged at the OPSP – Optics and Photonics for Scientific Progress.

    23rd April 2021

    INESC TEC project among the winners of the BIP PROOF

    The SpecTOM project (partnership between INESC TEC and U.Porto) was one of the winners of BIP PROOF 20/21, obtaining €10K of financial support for a proof of concept.

    29th March 2021

    Networked Intelligent Systems

    INESC TEC researchers set two world records in optical sensing

    During the months of October and November, Paulo Robalinho and André Gomes, researchers at INESC TEC’s Centre for Applied Photonics (CAP), published two articles in scientific journals, for the dissemination of two world records obtained in the optical deformation sensing and refractive index, using the Vernier effect.

    10th November 2020

    Networked Intelligent Systems

    INESC TEC researcher receives award at the 22nd National Physics Conference

    The work presented by Diana Capela, researcher at INESC TEC’s Centre for Applied Photonics (CAP), was awarded at PHYSICS 2020 – 22nd National Physics Conference and 30th Iberian Meeting for the Teaching of Physics, which took place between September 2 and 5, at the Institute of Education of the University of Lisbon. The participants attended the event in person and via Zoom.

    22nd September 2020

    View all News
    001
    Interest Topics
    Explore Interest Topics
    082

    Featured Projects

    SpecTOM_BIPProof2020

    SpectTOM BIP Proof 2020 - PROGRAMA DE ATRIBUIÇÃO DE APOIOS PARA PROVA DE CONCEITO DA UNIVERSIDADE DO PORTO

    2021-2021

    GREENPEG

    Análise de composição elementar pela técnica LIBS

    2020-2020

    LightBrain

    LightBrain - a light speed neuromorphic chip with quantum fluids of light

    2020-2022

    SMARTFARM40

    Soluções inteligentes para uma agricultura sustentável, preditiva e autónoma

    2020-2023

    inSITE

    inSITE. Insitu ore grading system using LIBS in harsh environments

    2020-2022

    FOOD4U

    Real-time monitoring of fresh food quality with optical sensors

    2019-2020

    SmartEcotec

    Viabilidade de Implementação de Sistema de Inteligência Artificial para o Diagnóstico, Previsão e Controlo Multivariado de Unidades de Tratamento de Lixiviados

    2019-2020

    WiPTherm

    Innovative WIreless Power devices Using micro-Thermoelectric Generators arrays for Nanosatellites

    2019-2022

    OpTweezers

    Consultoria, aconselhamento técnico e acesso a infraestrutura de fabrico e teste de pinças óticas

    2019-2021

    ESAPlastics

    DE-RISK ASSESSMENT: SPECTROMETER FOR MARINE LITTER

    2019-2021

    EFAR

    Cabeças sensoras para corrente contínua

    2019-2019

    FlexOPlan

    Planeamento Operacional da Potência Ativa e Reativa na Interface entre TSO e DSO

    2019-2021

    LED

    Consultoria especializada em sistemas óticos

    2018-2020

    SENVIB

    Sensor ótico de vibração para aplicações em transformadores

    2018-2018

    MetBots

    Metabolomic robots with self-learning artificial intelligence for precision agriculture

    2018-2021

    GreenNanoSensing

    Quantum nanoSensing for renewable energy and environmental management

    2018-2021

    ENDOR

    Endoscope based on new optical fibre technology for Raman spectroscopy

    2018-2021

    SolSensors

    Development of advanced fibre optic sensors to monitor the durability of concrete and reinforced concrete structures

    2018-2021

    SAFEWATER

    On chip whispering gallery mode optical microcavities for emerging microcontaminant determination in waters

    2018-2021

    FLAPSYS

    Fiber laser plasma spectroscopy system for real time element analysis

    2018-2021

    MINDOG

    Adaptação de 3 sensores de H2S para incorporação em sistemas de deteção de flatulência canina

    2017-2019

    TEC4Sea

    Modular Platform for Research, Test and Validation of Technologies supporting a Sustainable Blue Economy

    2017-2021

    INFANTE

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

    2017-2017

    AGRINUPES

    Integrated monitoring and control of water, nutrients and plant protection products towards a sustainable agricultural sector

    2017-2020

    CORAL-SENSORS

    CORAL – Sustainable Ocean Exploitation: Tools and Sensors

    2016-2018

    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

    TECCON2

    Acordo de Cooperação em P&D entre INESC P&D Brasil e INESCTEC para participação no projeto TECCON2

    2016-2020

    STRONGMAR-CRAS

    STRengthening MARritime Technology Research Center

    2016-2018

    MarineEye

    MarinEye - A prototype for multitrophic oceanic monitoring

    2015-2017

    NanoStima-RL1

    NanoSTIMA - Macro-to-Nano Human Sensing Technologies

    2015-2019

    VAMOS

    Viable Alternative Mine Operating System

    2015-2019

    EYEFRY

    Cooking oils degradation assessment system

    2014-2015

    Re-Learning

    Human motor re-learning by sensor information fusion

    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

    ThermaMonitor

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

    2013-2014

    Sensing

    Network Sensing for Critical Systems Monitoring

    2013-2015

    SmartGrids

    Smart Grids

    2013-2015

    Cyclops

    Single-Pixel Imaging Lidar based on Compressive Sensing

    2013-2014

    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

    SPR

    Plasmonics Based Fibre Optic Sensing with Enhanced Performance

    2012-2014

    WineBioCode

    Biosensor Development for Wine Traceability in the Douro Region

    2012-2015

    E-Coli

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

    2012-2012

    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

    2009-2017

    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

    Endurance0

    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
    Paulo Vicente Marques

    Centre Coordinator

    Ireneu Dias

    Centre Coordinator

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    002

    Laboratories

    Laboratory of Microfabrication

    Imaging Laboratory

    Publications

    CAP Publications

    View all Publications

    2021

    Experimental investigation of a strain gauge sensor based on Fiber Bragg Grating for diameter measurement

    Authors
    Cardoso, VHR; Caldas, P; Giraldi, MTR; Frazao, O; de Carvalho, CJR; Costa, JCWA; Santos, JL;

    Publication
    Optical Fiber Technology

    Abstract
    A strain gauge sensor based on Fiber Bragg Grating (FBG) for diameter measurement is proposed and experimentally demonstrated. The sensor is easily fabricated inserting the FBG on the strain gauge—it was fabricated using a 3D printer—and fixing the FBG in two points of this structure. The idea is to vary the diameter of the structure. We developed two experimental setups, the first one is used to evaluate the response of the FBG to strain and the second one to assess the possibility of using the structure developed to monitor the desired parameter. The results demonstrated that the structure can be used as a way to monitor the diameter variation in some applications. The sensor presented a sensitivity of 0.5361 nm/mm and a good linear response of 0.9976 using the Strain Gauge with FBG and fused taper. © 2020 Elsevier Inc.

    CloseRead Abstract

    2021

    Development of a Long Period Fiber Grating Interrogation System Using A Multimode Laser Diode

    Authors
    Silva, LH; Santos, P; Coelho, LCC; Jorge, P; Baptista, JM;

    Publication
    Sensors

    Abstract
    Optical fiber gratings have long shown their sensing capabilities. One of the main challenges, however, is the interrogation method applied, since typical systems tend to use broadband light sources with optical spectrum analyzers, laser scanning units or CCD (Charged Coupled Device) spectrometers. The following paper presents the development of an interrogation system, which explores the temperature response of a multimode laser diode, in order to interrogate long period fiber gratings. By performing a spectral sweep along one of its rejection bands, a discrete attenuation spectrum is created. Through a curve fitting technique, the original spectrum is restored. The built unit, while presenting a substantially reduced cost compared with typical interrogation systems, is capable of interrogating along a 10 nm window with measurement errors reaching minimum values as low as 0.4 nm, regarding the grating central wavelength, and 0.4 dB for its attenuation. Given its low cost and reduced dimensions, the developed system shows potential for slow-changing field applications.

    CloseRead Abstract

    2021

    Biosensors for Biogenic Amines: A Review

    Authors
    Vasconcelos, H; Coelho, LCC; Matias, A; Saraiva, C; Jorge, PAS; de Almeida, JMMM;

    Publication
    Biosensors

    Abstract
    Biogenic amines (BAs) are well-known biomolecules, mostly for their toxic and carcinogenic effects. Commonly, they are used as an indicator of quality preservation in food and beverages since their presence in higher concentrations is associated with poor quality. With respect to BA’s metabolic pathways, time plays a crucial factor in their formation. They are mainly formed by microbial decarboxylation of amino acids, which is closely related to food deterioration, therefore, making them unfit for human consumption. Pathogenic microorganisms grow in food without any noticeable change in odor, appearance, or taste, thus, they can reach toxic concentrations. The present review provides an overview of the most recent literature on BAs with special emphasis on food matrixes, including a description of the typical BA assay formats, along with its general structure, according to the biorecognition elements used (enzymes, nucleic acids, whole cells, and antibodies). The extensive and significant amount of research that has been done to the investigation of biorecognition elements, transducers, and their integration in biosensors, over the years has been reviewed.

    CloseRead Abstract

    2021

    Effect of low-doses of gamma radiation on electric arc-induced long period fiber gratings

    Authors
    Mesonero Santos, P; Fernandez Medina, A; Coelho, LCC; Viveiros, D; Jorge, PA; Belenguer, T; Heredero, RL;

    Publication
    Sensors

    Abstract
    This work presents an experimental study on the effects of gamma radiation on Long Period Fiber Gratings (LPFGs) in a low-dose test campaign to evaluate their eventual degradation. The study was carried out with standard single-mode fibers where the grating was inscribed using the Electric-Arc Discharge (EAD) technique. Before the gamma campaign, a detailed optical characterization was performed with repeatability tests to verify the accuracy of the setup and the associated error sources. The gamma-induced changes up to a dose of 200 krad and the recovery after radiation were monitored with the Dip Wavelength Shift (DWS). The results show that the gamma sensitivity for a total dose of 200 krad is 11 pm/krad and a total DWS of 2.3 nm has been observed with no linear dependence. Post-radiation study shows that recovery from radiation-induced wavelength shift is nearly complete in about 4000 h. Experimental results show that the changes suffered under gamma irradiation of these LPFGs are temporary making them a good choice as sensors in space applications. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

    CloseRead Abstract

    2021

    Nano-Displacement Measurement Using an Optical Drop-Shaped Structure

    Authors
    Robalinho, P; Frazao, O;

    Publication
    IEEE Photonics Technology Letters

    Abstract

    Supervised Theses

    2020

    Development of a hybrid CO2 monitoring system using spectral characteristics of a sensitive chemical membrane

    Author
    Nuno Alexandre Pereira Mendes

    Institution
    INESCTEC

    2020

    Development of cost-effective monitoring systems for chemical water contamination using nanoparticle coated optical fibre sensors

    Author
    Paulo Sérgio Soares dos Santos

    Institution
    INESCTEC

    2020

    Development of differential optrodes for highly sensitive and reliable chemical sensing

    Author
    João Pedro Sampaio Mendes

    Institution
    UP-FCUP

    2020

    Fiber Laser Plasma Spectroscopy for Real-Time

    Author
    Miguel Fernandes Soares Ferreira

    Institution
    UP-FCUP

    2020

    Optimization of LaserInduced Breakdown Spectroscopy (LIBS) for application in the cork industry

    Author
    Hugo Azevedo Veloso

    Institution
    UP-FCUP

    View all Supervised Theses

    Facts & Figures

    8Academic Staff

    2020

    0Book Chapters

    2020

    14Senior Researchers

    2016

    View all Facts & Figures
    Contacts
    CAP
    Centre for Applied Photonics
    Paulo Vicente Marques

    Coordinator

    +351220402301

    paulo.v.marques@inesctec.pt

    Ireneu Dias

    Coordinator

    +351220402301

    ireneu.dias@inesctec.pt