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
Mostafa Ahangrani-Farahani
Distributed-temperature remote sensing OFDR OTDR fiber optics fiber sensors optical-fiber frequency-domain analysis spontaneous Raman scattering