P3.2 - Robust, High-Performance Raman-OFDR System for Distributed Temperature Sensing

W. Hill, M. Busker, B. Callsen, A. Dreß, M. Fromme, D. Gavrila, St. Ketzer, J. Kübler, M. Löbbert, I. Roda, B. Sagirkaya & M. Wildenauer
Distributed temperature sensing (DTS) using Raman optical frequency domain reflectometry (Raman-OFDR) is known as a field-proven, reliable and economic technology for fire detection in tunnels and for temperature monitoring in power cables, pipelines, industrial ovens and oil wells. The semiconductor laser of the device does not show any wear because of the smooth modulation in continuous wave mode without high peak intensities. We developed a novel, light-noise limited detection scheme for the Raman-OTDR DTS resulting...