Bragg gratings and Fabry-Perot interferometers on an Er-MgO-doped optical fiber

Tiago Paixão, Luís Pereira, Rui Min, Carlo Molardi, Wilfried Blanc, Daniele Tosi, Carlos Marques, Paulo Antunes

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, the fabrication of fiber Bragg gratings (FBGs) and intrinsic Fabry-Pérot interferometers (IFPIs) on an Er-MgO-doped silica optical fiber is reported. The inscription of both sensing devices was performed by means of a femtosecond laser, using the phase mask method to inscribe the FBG and a micromachining platform for the IFPI. Thermal and strain characterizations were performed for both devices, achieving the maximum sensitivities of 12.57 pm/°C and 0.85 pm/µε for the FBG case, and 10.2 pm/°C and 0.91 pm/µε for the IFPI. A high temperature experiment was conducted to assess the thermal behavior of the inscribed FBG, revealing sensing capabilities for temperatures up to 700 °C. The results confirm that this new type of fiber will have an important role on the development of new optoelectronic devices, such as fiber lasers, optical amplifiers and sensors.

Original languageEnglish
Article number105946
JournalOptics and Laser Technology
Publication statusPublished - Mar 2020


  • Doped optical fiber
  • Fabry-Pérot interferometer
  • Femtosecond Laser
  • Fiber bragg grating

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Bragg gratings and Fabry-Perot interferometers on an Er-MgO-doped optical fiber'. Together they form a unique fingerprint.

Cite this