Simultaneous temperature sensing using distributed cascading fiber Bragg grating-based single-ended Brillouin optical time-domain analyzer

Jin Xu (1) , Zbigniew Dziong (1) , Adnane Cabani (2)

1 ETS - Ecole de Technologie Supérieure [Montréal]
2 Pôle Instrumentation, Informatique et Systèmes

We report a novel method of simultaneous distributed temperature sensing in optical fibers. The method is based on the cascading fiber Bragg grating (FBG) single-ended Brillouin optical time-domain analyzer (BOTDA). This proposal applies the technology of cascading FBGs to improve the signal-to-noise ratio of the single-ended BOTDA. Experimental results show achievement of a 50 km sensing range with 3 °C temperature resolution and 5 m spatial resolution.

Domaines: Réseaux et télécommunications [cs.NI]

Jin Xu, Zbigniew Dziong, Adnane Cabani. Simultaneous temperature sensing using distributed cascading fiber Bragg grating-based single-ended Brillouin optical time-domain analyzer. Laser Physics, 2018, 28 (12), pp.125101. ⟨10.1088/1555-6611/aae066⟩. ⟨hal-02302070⟩