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Spontaneous Raman scattering in optical fibers with modulated probe light for distributed temperature Raman remote sensing

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2 Author(s)
Farahani, M.A. ; Lehrstuhl fur Allgemeine Elektrotech., Ruhr-Univ., Bochum, Germany ; Gogolla, T.

Long-length fiber-optic remote Raman sensors are used for distributed temperature measurements. Toward this aim, we apply optical-fiber frequency-domain reflectometry. The Raman intensity generated in single- and multimode optical fibers is theoretically investigated for sinusoidally intensity-modulated probe light. Thus, a proper sensor element and wavelength for fiber-optic Raman sensing is determined. Further, the temperature error for long sensor fibers is theoretically analyzed

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Lightwave Technology, Journal of  (Volume:17 ,  Issue: 8 )