Dynamic strain measurement in optical fibers by stimulated Brillouin scattering.
We present a technique for dynamic strain measurements in optical fibers based on the stimulated Brillouin scattering interaction between two counterpropagating optical pulses. The technique allows for a high sampling rate and permits to addressing dynamically and randomly the position at which vibration is measured. Preliminary experimental results carried out with a perturbation frequency up to 98 Hz demonstrate the validity of the proposed technique.
Bernini
Romeo
R
Istituto per il Rilevamento Elettromagnetico dell'Ambiente (CNR), Via Diocleziano 328, 80124 Napoli, Italy.
Minardo
Aldo
A
Zeni
Luigi
L