Practical limitations of the slope assisted BOTDA method in dynamic strain sensing
2016
By analyzing the operation of the slope assisted Brillouin Optical Time-Domain Analysis (BOTDA) method, it comes
out that the acquisition rate is practically limited by two fundamental factors: the polarization scrambling frequency and
the phase noise from the laser. As regards polarization scrambling, we show experimentally that the scrambling
frequency poses a limit on the maximum acquisition rate for a given averaging factor. As regards phase noise, we show
numerically and experimentally that the slope assisted method is particularly sensitive to the laser phase noise, due to the
specific positioning of the pump-probe frequency shift on the Brillouin Gain Spectrum (BGS).
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
8
References
2
Citations
NaN
KQI