Analysis of FBG reflection spectra under uniform and non-uniform transverse loads

Alberto Milazzo, Roger M. Groves, Aydin Rajabzadeh, Luigi Fazzi

Risultato della ricerca: Other

Abstract

Loads applied transversely on the external surface of waveguides change their circular cross-sectional geometry generatingbirefringence. Due to this effect the reflected spectrum of a Fibre Bragg grating (FBG) undergoes a splitting of the singlepeak of the Bragg wavelength. In this work, we employed the Transfer Matrix Method (TMM) for x- and y-polarizedwave-modes to model the uniform FBG reflection spectra for uniform and non-uniform transverse loads. We alsoperformed experimental measurements for two different transverse load scenarios. The load profiles chosen for theseexperiments were applied on the FBG sensor through a block of steel and a roll bearing pin. Then, the modelled andexperimental results were compared resulting in good agreement of 85% (on average). Finally, during the roll bearing pinloading test, different responses were observed depending how the FBGs were surface mounted. To investigate this, theglue layer influence on the reflected spectrum was further studied experimentally.
Lingua originaleEnglish
Pagine73-
Numero di pagine9
Stato di pubblicazionePublished - 2019

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transverse loads
Fiber Grating
Bearings (structural)
Fiber Bragg gratings
Bragg Grating
Bragg gratings
Transverse
fibers
Transfer matrix method
Steel
matrix methods
Fiber Bragg Grating Sensor
Transfer Matrix Method
Waveguides
steels
waveguides
Waveguide
Wavelength
Geometry
sensors

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cita questo

Analysis of FBG reflection spectra under uniform and non-uniform transverse loads. / Milazzo, Alberto; Groves, Roger M.; Rajabzadeh, Aydin; Fazzi, Luigi.

2019. 73-.

Risultato della ricerca: Other

Milazzo, Alberto ; Groves, Roger M. ; Rajabzadeh, Aydin ; Fazzi, Luigi. / Analysis of FBG reflection spectra under uniform and non-uniform transverse loads. 9 pag.
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T1 - Analysis of FBG reflection spectra under uniform and non-uniform transverse loads

AU - Milazzo, Alberto

AU - Groves, Roger M.

AU - Rajabzadeh, Aydin

AU - Fazzi, Luigi

PY - 2019

Y1 - 2019

N2 - Loads applied transversely on the external surface of waveguides change their circular cross-sectional geometry generatingbirefringence. Due to this effect the reflected spectrum of a Fibre Bragg grating (FBG) undergoes a splitting of the singlepeak of the Bragg wavelength. In this work, we employed the Transfer Matrix Method (TMM) for x- and y-polarizedwave-modes to model the uniform FBG reflection spectra for uniform and non-uniform transverse loads. We alsoperformed experimental measurements for two different transverse load scenarios. The load profiles chosen for theseexperiments were applied on the FBG sensor through a block of steel and a roll bearing pin. Then, the modelled andexperimental results were compared resulting in good agreement of 85% (on average). Finally, during the roll bearing pinloading test, different responses were observed depending how the FBGs were surface mounted. To investigate this, theglue layer influence on the reflected spectrum was further studied experimentally.

AB - Loads applied transversely on the external surface of waveguides change their circular cross-sectional geometry generatingbirefringence. Due to this effect the reflected spectrum of a Fibre Bragg grating (FBG) undergoes a splitting of the singlepeak of the Bragg wavelength. In this work, we employed the Transfer Matrix Method (TMM) for x- and y-polarizedwave-modes to model the uniform FBG reflection spectra for uniform and non-uniform transverse loads. We alsoperformed experimental measurements for two different transverse load scenarios. The load profiles chosen for theseexperiments were applied on the FBG sensor through a block of steel and a roll bearing pin. Then, the modelled andexperimental results were compared resulting in good agreement of 85% (on average). Finally, during the roll bearing pinloading test, different responses were observed depending how the FBGs were surface mounted. To investigate this, theglue layer influence on the reflected spectrum was further studied experimentally.

UR - http://hdl.handle.net/10447/349584

M3 - Other

SP - 73-

ER -