Title :
Spontaneous Raman scattering in optical fibers with modulated probe light for distributed temperature Raman remote sensing
Author :
Farahani, Mostafa Ahangrani ; Gogolla, Torsten
Author_Institution :
Lehrstuhl fur Allgemeine Elektrotech., Ruhr-Univ., Bochum, Germany
fDate :
8/1/1999 12:00:00 AM
Abstract :
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
Keywords :
Raman spectra; distributed sensors; fibre optic sensors; optical fibre testing; optical fibre theory; reflectometry; spectral methods of temperature measurement; Raman intensity; distributed temperature Raman remote sensing; distributed temperature measurements; fiber-optic Raman sensing; fibre optic sensors; long sensor fibers; long-length fiber-optic remote Raman sensors; modulated probe light; multimode optical fibers; optical fibers; optical fibre testing; optical-fiber frequency-domain reflectometry; sensor element; single-mode optical fibers; sinusoidally intensity-modulated probe light; spontaneous Raman scattering; temperature error; Frequency domain analysis; Optical fiber sensors; Optical fibers; Optical modulation; Optical scattering; Optical sensors; Probes; Raman scattering; Temperature measurement; Temperature sensors;
Journal_Title :
Lightwave Technology, Journal of
