Wavelength sensitive time-domain interrogating system for a quasi-distributed temperature sensor

C. Crunelle; M. Wuilpart; C. Caucheteur; P. Mégret

doi:10.1117/12.786096

16 May 2008 Wavelength sensitive time-domain interrogating system for a quasi-distributed temperature sensor

C. Crunelle, M. Wuilpart, C. Caucheteur, P. Mégret

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70043O (2008) https://doi.org/10.1117/12.786096
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

A quasi-distributed temperature monitoring system based on the concatenation of identical low reflective Fibre Bragg Gratings and interrogated by means of an Optical Time Domain Reflectometer is presented. A wavelength sensitive system placed before the OTDR detector is used to analyse the reflected signal. This system allows the height of the FBG reflection peaks in the OTDR trace to depend on their resonance wavelength, and therefore to temperature. Simulations and experimental results are exposed.

Citation Download Citation

C. Crunelle, M. Wuilpart, C. Caucheteur, and P. Mégret "Wavelength sensitive time-domain interrogating system for a quasi-distributed temperature sensor", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043O (16 May 2008); https://doi.org/10.1117/12.786096

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