Extension of the maximum measuring range in distributed Brillouin fiber sensors by tunning the Stokes/anti-Stokes power ratio
A. Minardo, Second University of Naples (Italy); R. Bernini, CNR-IREA - Institute for the Electromagnetic Survey of the Atmosphere (Italy); L. Zeni, Second University of Naples (Italy)
In this work, we extend the use of the gain-loss technique in order to enhance the long-range capabilities of Brillouinbased distributed sensors. In particular, we take advantage of the use of an unbalanced pair of Stokes and anti-Stokes lines, in order to better compensate for SBS spectra distortion resulting from pump depletion. Numerical results confirmed the validity of the approach.
