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About

About

I have received my master’s degree in Physical Engineering from the Faculty of Sciences of University of Porto (FCUP) in October 2016. My master thesis, “Optical Sensors Based on Fabry-Perot Interferometry”, was conducted in collaboration between FCUP and INESC-TEC, at the Center of Applied Photonics (CAP).

I have worked at Centre for Information Systems and Computer Graphics (CSIG), participating in a research project to develop optical fiber sensors for radon detection in marine environments.

I am currently a PhD student at CAP.

Interest
Topics
Details

Details

  • Nationality

    Portugal
  • Centre

    Applied Photonics
  • Contacts

    +351220402301
    catarina.s.monteiro@inesctec.pt
001
Publications

2019

High sensitivity strain sensor based on twin hollow microspheres

Authors
Monteiro, CS; Kobelke, J; Schuster, K; Bierlich, J; Silva, SO; Frazao, O;

Publication
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS

Abstract
A sensor based on 2 hollow core microspheres is proposed. Each microsphere was produced separately through fusion splicing and then joined. The resultant structure is a Fabry-Perot interferometer with multiple interferences that can be approximated to a 4-wave interferometer. Strain characterization was attained for a maximum of 1350 mu epsilon, achieving a linear response with a sensitivity of 3.39 +/- 0.04 pm/mu epsilon. The fabrication technique, fast and with no chemical hazards, as opposed to other fabrication techniques, makes the proposed sensor a compelling solution for strain measurements in hash environments.

2019

Graphene oxide as a tunable platform for microsphere-based optical fiber sensors

Authors
Monteiro, CS; Raposo, M; Ribeiro, P; Silva, S; Frazaõ, O;

Publication
Proceedings of SPIE - The International Society for Optical Engineering

Abstract
Hollow microsphere fiber sensors are Fabry-Perot interferometers (FPI) that can be used for lateral loading, temperature, and refractive index sensing. In this work, graphene oxide (GO) is explored as a tunable platform for enhancing the spectral properties of hollow microsphere fiber sensors. GO offers similar mechanical and optical properties as graphene, with the advantage of a wider range of deposition methods and a lower cost. The influence of multilayer coatings of polyethylenimine (PEI) and GO, achieved with the layer-by-layer technique, on the reflectivity of the outer surface, and hence, on the spectrum of the FPI for maximum of 30 bilayers was studied. The obtained results revealed a change of the microsphere outer surface reflectivity and also of visibility of the reflected spectrum when varying the number of bilayers. A maximum signal amplitude of 3.9 dB was attained for the 13th bilayer, allowing to conclude that PEI/GO multilayer coatings can be used for enhancing desired properties of the three-wave FPI for different sensing applications. © 2019 SPIE.

2018

A Brief Review of New Fiber Microsphere Geometries

Authors
Gomes, AD; Monteiro, CS; Silveira, B; Frazao, O;

Publication
Fibers

Abstract

2018

Development of a new system for real-time detection of radon using scintillating optical fibers

Authors
Monteiro, CS; Coelho, L; Barbosa, SM; Guimarães, D;

Publication
Optics InfoBase Conference Papers

Abstract
A remote sensor for radon continuous measurement using polymeric scintillation optical fibers was developed and evaluated. Successful preliminary results showed detection of natural occurring radon from a container with rocks rich in uranium oxides. © OSA 2018 © 2018 The Author(s)

2017

Embedded Fabry-Perot based Sensor Using Three-Dimensional Printing Technology

Authors
Monteiro, CS; Santos, BF; Silva, SO; Abreu, P; Restivo, MT; Frazao, O;

Publication
2017 25TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS (OFS)

Abstract
A sensor based on Fabry-Perot interferometry with a hollow microsphere cavity embedded in a 3D printed structure is proposed. The sensor was tested for lateral loading and temperature, showing promising results. By imprintring the sensor on the structure, the dynamic range of application is severely increased enabling the application of the sensor in harsh environments.