Time and wavelength division multiplexing scheme for ultra-long sensing based on a cavity-modulated random DFB fiber laser

D. Leandro; R. Perez-Herrera; M. Bravo; M. Lopez-Amo

doi:10.1117/12.2194561

28 September 2015 Time and wavelength division multiplexing scheme for ultra-long sensing based on a cavity-modulated random DFB fiber laser

D. Leandro, R. Perez-Herrera, M. Bravo, M. Lopez-Amo

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963415 (2015) https://doi.org/10.1117/12.2194561
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

In this work, a new multiplexing scheme for ultra-long range measurements (up to 200 km) is presented. Time and wavelength sensor multiplexing is achieved by means of a modulated random distributed feedback laser (DFB). The direct modulation of the laser’s cavity allows the interrogation of sensors by measuring the reflected power for different wavelengths and distances. As a proof of concept, nine fiber Bragg gratings (FBGs) placed at different fiber locations and wavelengths have been interrogated.

Citation Download Citation

D. Leandro, R. Perez-Herrera, M. Bravo, and M. Lopez-Amo "Time and wavelength division multiplexing scheme for ultra-long sensing based on a cavity-modulated random DFB fiber laser", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963415 (28 September 2015); https://doi.org/10.1117/12.2194561

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