2017
DOI: 10.1088/1555-6611/aa792f
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Distributed stress and temperature sensing based on Rayleigh scattering of low-coherence light

Abstract: A novel arrangement for fiber optic distributed stress and temperature sensing based on the Rayleigh scattering spectra correlation method is proposed. The principal feature of the arrangement is usage of low-coherence light in probe pulses, which ensures a wide dynamic range for measurements at moderate sensitivity. Such a characteristic corresponds to performance specifications for infrastructure monitoring systems. A theory of optical time domain reflectometry for arbitrary coherence light is developed desc… Show more

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Cited by 11 publications
(8 citation statements)
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“…The experiments performed at a low peak power level of probe pulses (up to 66 mW) repeated the results given in [5]. Increasing the peak power above this level, we observed nonlinear effects.…”
Section: Experiments #1 and Discussionsupporting
confidence: 82%
See 3 more Smart Citations
“…The experiments performed at a low peak power level of probe pulses (up to 66 mW) repeated the results given in [5]. Increasing the peak power above this level, we observed nonlinear effects.…”
Section: Experiments #1 and Discussionsupporting
confidence: 82%
“…The basic experimental setup is shown in figure 1(a). It is similar in general detail to the one described in [5], figure 1, and represents a tunable wavelength optical time-domain reflectometer (TW-OTDR) arrangement, with an operating wavelength tuned in the range 1555-1561 nm in steps of 0.05 nm (121 steps in total) by a tunable MEMS filter TF (DiCon Fiberoptics MTF500B) with an optical bandwidth of around 0.17 nm (full width at half maximum, FWHM). A superluminescent diode SLD based on a Superlum SLD-761 integrated module followed by an erbium-doped fiber amplifier (EDFA) AMP1 is used as a probe source.…”
Section: Experiments #1 and Discussionmentioning
confidence: 99%
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“…Special attention is drawn to the possibility of simultaneous measurement of strain and temperature by the OTDR. However, this issue is complicated by the fact that both these disturbances are detected by the same principle of measurement of the induced change in the optical phase of the backscattered field, and serious efforts are being made to distinguish them, see [5][6][7][8][9] and the references therein.…”
Section: Introductionmentioning
confidence: 99%