… Brillouin phase spectrum (BPS) instead of the Brillouin gain spectrum (BGS) in BOTDA setups…
In comparison to the gain, for an equal SNR and linewidth, the phase generally provides a …

… each BOTDA trace used for cumulative average to obtain averaged BOTDA trace is obtained
under a different phase … 3 Experimental setup of the conventional coherent BOTDA sensor …

… setup In order to analyze the performance of the slope-assisted BOTDA, we have established
an experimental setup … capable of measuring both Brillouin gain and phase-shift. The CW …

… a reduction of phase noise and also take advantage from the architecture of BOTDA setups,
… For example since we have information of gain and phase-shift, fitting to both measurands …

… EXPERIMENTAL SETUP AND RESULTS The developed experimental setup is based on
a standard BOTDA system although, in this case, the Fiber Under Test (FUT) is inserted into a …

… BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift
in addition to the conventional Brillouin gain. This … setup for the phase-shift-based BOTDA …

… BOTDA sensors, we deployed the experimental setup depicted in Fig. 1 [10]. A distributed
feedback laser (DFB) laser is used as the optical source. Then, in the upper branch of the setup…

… required in conventional BOTDA configurations, with the consequent measuring time increase.
… The first technique is based on employing a pre-amplification stage before detection. This …

… 3 describes the experimental setup used for this study. The same section also demonstrates
… two opposite-values slopes are 180 out of phase. Their average values are slightly different, …

… While on the order of milliseconds in classical BOTDA setups, … strain through its effect
on the phase of the complex BGS. … on gain fluctuations resulting from erroneous settings of …