Fiber Bragg Grating (FBG) sensors in a high-scattering optical fiber doped with MgO nanoparticles for polarization-dependent temperature sensing

Carlo Molardi, Tiago Paixão, Aidana Beisenova, Rui Min, Paulo Antunes, Carlos Marques, Wilfried Blanc, Daniele Tosi

Research output: Contribution to journalArticle

Abstract

The characterization of Fiber Bragg Grating (FBG) sensors on a high-scattering fiber, having the core doped with MgO nanoparticles for polarization-dependent temperature sensing is reported. The fiber has a scattering level 37.2 dB higher than a single-mode fiber. FBGs have been inscribed by mean of a near-infrared femtosecond laser and a phase mask, with Bragg wavelength around 1552 nm. The characterization shows a thermal sensitivity of 11.45 pm/°C. A polarization-selective thermal behavior has been obtained, with sensitivity of 11.53 pm/°C for the perpendicular polarization (S) and 11.08 pm/°C for the parallel polarization (P), thus having 4.0% different sensitivity between the two polarizations. The results show the inscription of high-reflectivity FBGs onto a fiber core doped with nanoparticles, with the possibility of having reflectors into a fiber with tailored Rayleigh scattering properties.

Original languageEnglish
Article number3107
JournalApplied Sciences (Switzerland)
Volume9
Issue number15
DOIs
Publication statusPublished - Aug 1 2019

Fingerprint

Fiber Bragg gratings
Bragg gratings
Optical fibers
optical fibers
Scattering
Polarization
Nanoparticles
nanoparticles
fibers
sensors
Sensors
polarization
scattering
Fibers
Temperature
temperature
Rayleigh scattering
Single mode fibers
Ultrashort pulses
sensitivity

Keywords

  • Enhanced backscattering fiber
  • FBG sensor
  • Fiber Bragg Grating (FBG)
  • Polarization-sensitive device
  • Rayleigh scattering

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this

Fiber Bragg Grating (FBG) sensors in a high-scattering optical fiber doped with MgO nanoparticles for polarization-dependent temperature sensing. / Molardi, Carlo; Paixão, Tiago; Beisenova, Aidana; Min, Rui; Antunes, Paulo; Marques, Carlos; Blanc, Wilfried; Tosi, Daniele.

In: Applied Sciences (Switzerland), Vol. 9, No. 15, 3107, 01.08.2019.

Research output: Contribution to journalArticle

Molardi, Carlo ; Paixão, Tiago ; Beisenova, Aidana ; Min, Rui ; Antunes, Paulo ; Marques, Carlos ; Blanc, Wilfried ; Tosi, Daniele. / Fiber Bragg Grating (FBG) sensors in a high-scattering optical fiber doped with MgO nanoparticles for polarization-dependent temperature sensing. In: Applied Sciences (Switzerland). 2019 ; Vol. 9, No. 15.
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abstract = "The characterization of Fiber Bragg Grating (FBG) sensors on a high-scattering fiber, having the core doped with MgO nanoparticles for polarization-dependent temperature sensing is reported. The fiber has a scattering level 37.2 dB higher than a single-mode fiber. FBGs have been inscribed by mean of a near-infrared femtosecond laser and a phase mask, with Bragg wavelength around 1552 nm. The characterization shows a thermal sensitivity of 11.45 pm/°C. A polarization-selective thermal behavior has been obtained, with sensitivity of 11.53 pm/°C for the perpendicular polarization (S) and 11.08 pm/°C for the parallel polarization (P), thus having 4.0{\%} different sensitivity between the two polarizations. The results show the inscription of high-reflectivity FBGs onto a fiber core doped with nanoparticles, with the possibility of having reflectors into a fiber with tailored Rayleigh scattering properties.",
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AU - Marques, Carlos

AU - Blanc, Wilfried

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