Articles | Volume 7, issue 1
Special issue:
Regular research article
20 Feb 2018
Regular research article |  | 20 Feb 2018

Temperature sensing in underground facilities by Raman optical frequency domain reflectometry using fiber-optic communication cables

Markus Brüne, Wilhelm Furian, Wieland Hill, and Andreas Pflitsch

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Cited articles

Albani, J. R.: Structure and dynamics of macromolecules: Absorption and fluorescence studies, edited by: Albani, J. R., Elsevier, Amsterdam, ISBN 978-0-444-51449-3, 2004. a
Brüne, M., Pflitsch, A., Agnew, B., and Spiegel, J.: Dynamics of natural air flow inside subway tunnels, in: Proceedings from the Fifth International Symposium on Tunnel Safety and Security, edited by: Lönnermark, A. and Ingason, H., 1, 329–337, SP Technical Research Institute of Sweden, Borås and Sweden, 2012. a
Dakin, J. P., Pratt, D. J., Bibby, G. W., and Ross, J. N.: Distributed optical fibre Raman temperature sensor using a semiconductor light source and detector, Electron. Lett., 21, 569–570,,, 1985. a, b
Ghafoori-Shiraz, H. and Okoshi, T.: Optical frequency-domain reflectometery, Opt. Quant. Electron., 18, 265–272,, 1986. a
Hill, W., Kübler, J., and Fromme, M.: Single-mode distributed temperature sensing using OFDR, in: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, edited by: Santos, J. L., Culshaw, B., López-Higuera, J. M., and MacPherson, W. N., SPIE Proceedings, p. 765342, SPIE,, 2010. a, b, c
Short summary
The climate conditions in underground transportation facilities, especially the current airflow in terms of direction and speed, are the key factor driving smoke propagation in the case of a tunnel fire. Sensing this airflow is cost-intensive. Therefore, this paper focuses on gaining the information from temperature sensing along the tunnels using already installed optical fibers normally used for communications. This technique can replace thousands of temperature sensors.
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