Brillouin sensing in optically heated Co2+-doped fibers

A. Minardo; A. Coscetta; E. Catalano; E. Cerri; L. Zeni

doi:10.1117/12.2540342

28 August 2019 Brillouin sensing in optically heated Co²⁺-doped fibers

A. Minardo, A. Coscetta, E. Catalano, E. Cerri, L. Zeni

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 1119927 (2019) https://doi.org/10.1117/12.2540342
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

In this paper, we demonstrate the use of single-mode Cobalt-doped fibers for active distributed temperature sensing with optical heating. A high-power EDFA at 1550nm is used for optically heating the fiber, while a Brillouin Optical FrequencyDomain Analysis (BOFDA) set-up operating at 850nm is employed to monitor the corresponding temperature changes. Owing to the use of a dual wavelength scheme, longer sensing distances can be reached even with relatively high doping concentrations. As a proof of concept, we demonstrate the possibility to distinguish two 1-m fiber sections, one immersed into water and another one surrounded by air.

Citation Download Citation

A. Minardo, A. Coscetta, E. Catalano, E. Cerri, and L. Zeni "Brillouin sensing in optically heated Co²⁺-doped fibers", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119927 (28 August 2019); https://doi.org/10.1117/12.2540342

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