Temperature dependence of the stress response of fibre Bragg gratings

Maier, Robert R. J.; MacPherson, William N.; Barton, James S.; Jones, Julian D. C.; McCulloch, Scott; Burnell, Gary

doi:10.1088/0957-0233/15/8/030

Cited by 25 publications

(14 citation statements)

References 19 publications

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“…The fiber was anchored using glass solder (OzOptics, Canada) chosen due to the similarity of its mechanical properties to those of optical fiber. The glass solder reduces the strain relaxation that can complicate strain characterization and calibration when compared with the epoxy alternative available [28]- [30].…”

Section: Methodsmentioning

confidence: 99%

Anisotropic Fiber Bragg Gratings Inscribed by High-Intensity Femtosecond-UV Pulses: Manufacturing Technology and Strain Characterization for Sensing Applications

et al. 2008

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Section: Methodsmentioning

confidence: 99%

Anisotropic Fiber Bragg Gratings Inscribed by High-Intensity Femtosecond-UV Pulses: Manufacturing Technology and Strain Characterization for Sensing Applications

et al. 2008

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“…Both acrylic and polyamide coated gratings exhibit some non-linearity for temperatures below zero. The significant non-lineaty observed for acrylic coated gratings can be attributed to the glass transition temperature of acrylic recoat material [10,24]. It is reported [24] that the material properties change significantly over this temperature range.…”

Section: Expanded Temperature Rangementioning

confidence: 98%

“…The significant non-lineaty observed for acrylic coated gratings can be attributed to the glass transition temperature of acrylic recoat material [10,24]. It is reported [24] that the material properties change significantly over this temperature range. For instance, below the glass transition temperature, the coating becomes significantly harder.…”

Section: Expanded Temperature Rangementioning

confidence: 98%

Characterization of fibre Bragg gratings for temperature and strain sensing

et al. 2007

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Since their introduction in the mid seventies, a variety of fibre optic sensor configurations have been developed for the measurement of strain, deformation, temperature, vibration, pressure, etc. Variation of these parameters alters the refractive index and the geometric properties of the optical fibre, which in turn perturbs the intensity, phase, or polarization of the light wave propagating in the waveguide. Only in the past decade that Bragg grating-based fibre optic sensors emerged as the non-disputed champion in multiplexing and dual parameter sensing with increased potential for smart structure applications. Stringent requirements for single point discrete or distributed simultaneous strain and temperature measurements prompted this characterization study which has the objective of developing a detailed understanding of grating characteristics and response under external stimuli. Collocated and serially placed gratings were evaluated and tested for their effective sensitivity to strain and temperature and to coating materials variation such as polyamide and acrylite. Experimental sensitivity results correlated well with theoretical estimation for strain in single gratings. Whereas, significant wavelength differential is required for simultaneous temperature and strain measurement if collocated gratings are used.

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“…This can be controlled by assigning a bitmap with 302 × 302 pixels to a 10 × 10 μm 2 milling area. The dwell time at each beam position was calculated according to equation (2), with the consideration of the beam overlap effect and the angular dependence of sputter yield. A 10 × 10 μm reflective mirror with 45…”

Section: Fabrication Of the 45mentioning

confidence: 99%

Fabrication of a side aligned optical fibre interferometer by focused ion beam machining

Sun¹,

Li²,

Maier³

et al. 2013

J. Micromech. Microeng.

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Focused ion beam (FIB) machining is a promising technique for the fabrication of micro-optical components with high quality surface finishes. In this work, a prototype of a side aligned optical fibre interferometer was successfully fabricated by the three-dimensional deterministic FIB machining technique. A highly accurate 45• reflective mirror with surface roughness (Ra) of 10 nm has been successfully fabricated at the centre of the fibre to direct the core guided light to the side of the fibre. A surface topography simulation method was developed to simulate the ion beam polishing process. According to the simulation result, a 0.5• offset on the ion beam polishing direction is necessary to maintain the machining accuracy. In the fabrication process, it was also found that for structures requiring a high aspect ratio the existence of an open edge can mitigate against the material redeposition on the sidewalls and therefore increase the overall material removal rate. The fibre has been tested optically and the interference signals have been successfully observed, demonstrating the alignment accuracy of the fabrication method.

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Temperature dependence of the stress response of fibre Bragg gratings

Cited by 25 publications

References 19 publications

Anisotropic Fiber Bragg Gratings Inscribed by High-Intensity Femtosecond-UV Pulses: Manufacturing Technology and Strain Characterization for Sensing Applications

Anisotropic Fiber Bragg Gratings Inscribed by High-Intensity Femtosecond-UV Pulses: Manufacturing Technology and Strain Characterization for Sensing Applications

Characterization of fibre Bragg gratings for temperature and strain sensing

Fabrication of a side aligned optical fibre interferometer by focused ion beam machining

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