Strain-Temperature Discrimination Using a Single Fiber Bragg Grating

Rahman, Aashia; Madhav, Kalaga; Srinivasan, Balaji; Asokan, S.

doi:10.1109/lpt.2010.2044657

Cited by 27 publications

(9 citation statements)

References 10 publications

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“…17 As the temperature variations can also cause a shift in the Bragg wavelength, it is important to compensate for temperature variations (if any) while using the FBG sensor for strain measurements. 18 However, in the present work, temperature effect on the FBG sensor has been ignored, as the temperature change during the experimental course was negligibly small.…”

Section: Fiber Bragg Grating Sensorsmentioning

confidence: 95%

Blood pressure evaluation using sphygmomanometry assisted by arterial pulse waveform detection by fiber Bragg grating pulse device

et al. 2013

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We report a blood pressure evaluation methodology by recording the radial arterial pulse waveform in real time using a fiber Bragg grating pulse device (FBGPD). Here, the pressure responses of the arterial pulse in the form of beat-to-beat pulse amplitude and arterial diametrical variations are monitored. Particularly, the unique signatures of pulse pressure variations have been recorded in the arterial pulse waveform, which indicate the systolic and diastolic blood pressure while the patient is subjected to the sphygmomanometric blood pressure examination. The proposed method of blood pressure evaluation using FBGPD has been validated with the auscultatory method of detecting the acoustic pulses (Korotkoff sounds) by an electronic stethoscope.

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Section: Fiber Bragg Grating Sensorsmentioning

confidence: 95%

Blood pressure evaluation using sphygmomanometry assisted by arterial pulse waveform detection by fiber Bragg grating pulse device

et al. 2013

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“…To overcome this cross-sensitivity issue, various measurement methods have been presented and used. A combination of multiple gratings, 25) an in-fiber short Fabry-Perot cavity, 26,27) an FBG written in a high-birefringence fiber, [28][29][30] and some FBGs with special structures 31,32) were presented as sensor heads for the simultaneous measurement of temperature and strain.…”

Section: Introductionmentioning

confidence: 99%

Fast and accurate full-spectrum interrogation for fiber Fabry–Perot interferometric sensor consisting of Bragg gratings in polarization maintaining fiber

Wada¹,

Tanaka²,

Takahashi³

2018

Jpn. J. Appl. Phys.

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A measurement method for many sharp transmittance peaks of a fiber Fabry–Perot interferometer (FPI) with high resolution in a short time is proposed. Using the proposed method, temperature and strain dependences of an FPI constructed using polarization maintaining type fiber Bragg grating (PM-FBG-FPI) are evaluated. By detecting wavelength shift occurring in many peaks of a PM-FBG-FPI with high resolution, it is possible to quantitatively evaluate a slight shift coefficient difference due to the difference in resonance order of each peak. Simultaneous measurement resolution of temperature and strain by the PM-FBG-FPI sensor is also improved by using the average value of the wavelength shift detected at many peaks. The resulting high-resolution measurements are demonstrated experimentally.

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“…To remove this cross-sensitivity issue, various measurement methods have been presented and used. A combination of multiple gratings, 25) an in-fiber short Fabry-Perot cavity, 26,27) an FBG written in a high-birefringence fiber, [28][29][30] and some FBGs with special structures 31,32) were presented as sensor heads for the simultaneous measurement of temperature and strain.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous measurement of strain and temperature using a Fabry–Perot interferometer consisting of Bragg gratings in polarization-maintaining fiber and current-modulated laser diodes

Wada¹,

Tanaka²,

Takahashi³

2017

Jpn. J. Appl. Phys.

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A fast and high-resolution simultaneous measurement of strain and temperature using an optical fiber sensor is presented. Temperature and strain can be measured simultaneously by using two types of reflection spectra of a Fabry–Perot interferometer consisting of fiber Bragg gratings in a polarization-maintaining fiber (PM-FBG-FPI). The fine structure of a reflection spectrum of the PM-FBG-FPI enables the high-resolution detection of wavelength shifts. We present a fast interrogation method with current modulation of a laser diode for PM-FBG-FPI sensors. The resulting fast measurement is demonstrated experimentally.

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Strain-Temperature Discrimination Using a Single Fiber Bragg Grating

Cited by 27 publications

References 10 publications

Blood pressure evaluation using sphygmomanometry assisted by arterial pulse waveform detection by fiber Bragg grating pulse device

Blood pressure evaluation using sphygmomanometry assisted by arterial pulse waveform detection by fiber Bragg grating pulse device

Fast and accurate full-spectrum interrogation for fiber Fabry–Perot interferometric sensor consisting of Bragg gratings in polarization maintaining fiber

Simultaneous measurement of strain and temperature using a Fabry–Perot interferometer consisting of Bragg gratings in polarization-maintaining fiber and current-modulated laser diodes

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