%0 Journal Article 
%A Domínguez López, Alejandro
%A López Gil, Alexia Inés
%A Martín López, Sonia
%A González Herráez, Miguel
%T Strong Cancellation of RIN Transfer in a Raman-Assisted BOTDA Using Balanced Detection
%D 2014
%@ 1041-1135
%U http://hdl.handle.net/10017/25138
%X Raman assistance is one of the most interesting
routes toward extending the range of Brillouin optical timedomain
analysis (BOTDA) systems. Unfortunately, the use of
Raman amplification normally entails an important relative
intensity noise (RIN) transfer toward the probe wave, which
severely limits this approach. In this letter, we show that the
RIN transfer problem can be effectively avoided using a slightly
modified scheme comprising a dual-sideband modulated probe
and balanced detection. Our measurements clearly indicate a
nearly complete cancellation of the RIN noise in the detected
trace signal. The use of balanced detection in our Raman-assisted
BOTDA setup implies a fivefold increase in figure of merit
compared with the same setup using conventional detection.
%K Distributed sensor
%K Optical fiber sensors
%K Raman scattering
%K Brillouin scattering
%K Balanced detection
%K Temperature sensor
%K Ciencias tecnológicas
%K Electrónica
%K Technology
%K Electronics
%~ Biblioteca Universidad de Alcala