Untersuchung der spontanen Raman-Streuung in Lichtleitfasern zur ortsaufgelösten Temperaturmessung basierend auf der Frequenzbereichsreflektometrie

Abstract Long-length fiber-optic remote Raman sensors are used for distributed temperature measurments. 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 detemined. Further, the temperature error for long sensor fibers is theoretically analyzed. Als Manuskript gedruckt