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Remote (155 km) fiber Bragg grating interrogation technique combining Raman, Brillouin, and erbium gain in a fiber laser

Abstract: We present and demonstrate a technique for remote sensing of fiber Bragg gratings (FBGs) beyond 150 km. The system combines Raman, Brillouin, and erbium gain in a linear cavity fiber laser and deploys a novel heterodyne detection technique to avoid the signal-to-noise ratio limitations produced by Rayleigh scattering. Two FBGs located in series were interrogated at 155 km away from the processing unit using 0.6 W of Raman pump and less than 2 mW of Brillouin pump provided by a tunable wavelength-swept laser. Heterodyne detection brings forth a signal-to-noise ratio of approximately 10 dB in our measurements.

 Autoría: Leandro D., Ullan A., Loayssa A., López-Higuera J., López-Amo M.,

 Fuente: IEEE Photonics Technology Letters, 2011, 23(10), 621-623

 Editorial: Institute of Electrical and Electronics Engineers, Inc.

 Fecha de publicación: 15/05/2011

 Nº de páginas: 3

 Tipo de publicación: Artículo de Revista

 DOI: 10.1109/LPT.2011.2119298

 ISSN: 1041-1135,1941-0174

 Proyecto español: TEC2007-67987-C02

 Url de la publicación: https://doi.org/10.1109/LPT.2011.2119298

Autoría

LEANDRO GONZÁLEZ, DANIEL

ANGEL ULLAN NIETO

ALAYN LOAYSSA LARA

MANUEL LOPEZ-AMO SAINZ