P4.6 - Temperature Sensing in Underground Facilities by Raman-OFDR Using Fiber-Optic Communication Cables

M. Brüne, A. Pflitsch, W. Furian & W. Hill
Gaining information on climatic conditions in subway tunnels is the key to predicting the propagation of smoke or toxic gases in these infrastructures in the case of a fire or a terrorist attack. As anemometer measurements are not suitable, the employment f alternative monitoring methods is necessary. High-resolution temperature sensing with Raman-OFDR using optical communication fiber cables shows great potential as it allows the surveillance of several kilometers of underground transport facilities without the need...