Title :
Distributed Brillouin Fiber Sensor With Enhanced Sensitivity Based on Anti-Stokes Single-Sideband Suppressed-Carrier Modulation
Author :
Nguyen, Duc Minh ; Stiller, Birgit ; Lee, Min Won ; Beugnot, Jean-Charles ; Maillotte, Herve ; Mottet, Alexandre ; Hauden, Jerome ; Sylvestre, Thibaut
Author_Institution :
FEMTO-ST Inst., Univ. de Franche-Comt, Besancon, France
Abstract :
We demonstrate an alternative technique to reduce pump depletion and to improve sensitivity in the long-range Brillouin optical time-domain analysis (BOTDA) sensor. Our BOTDA system uses an anti-Stokes single-sideband suppressed-carrier modulation technique that balances the pump depletion due to fiber loss. With this technique, we show both numerically and experimentally a great improvement compared to the dual sideband standard technique.
Keywords :
distributed sensors; fibre optic sensors; numerical analysis; optical fibre losses; optical modulation; optical pumping; stimulated Brillouin scattering; time-domain analysis; BOTDA system; antiStokes single-sideband suppressed-carrier modulation; distributed Brillouin fiber sensor; fiber loss; long-range Brillouin optical time-domain analysis sensor; pump depletion; Amplitude modulation; Optical fiber sensors; Optical fibers; Probes; Scattering; Strain; Brillouin optical time domain analysis; fiber optic sensor; single-sideband modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2228848
