Title :
Combination of walsh and Golay codes in modulating the pump light of phase-shift pulse BOTDA sensor
Author :
Zan, M.S.D.B. ; Yokoyama, Kazuya ; Horiguchi, Takeshi
Author_Institution :
Grad. Sch. of Eng. & Sci., Shibaura Inst. of Technol., Tokyo, Japan
Abstract :
Simulation and experimental results have shown that the combination of two kinds of codes to modulate phase-shift pulse Brillouin optical time domain analysis (PSP-BOTDA) pump pulse for distributed strain measurement provides higher SNR than that of using only one code system, and better spatial resolution than dual Golay codes PSP-BOTDA. In preliminary experiments, 10cm spatial resolution measurement was demonstrated.
Keywords :
Golay codes; optical pumping; optical sensors; strain measurement; time-domain analysis; Brillouin optical time domain analysis; Golay codes; PSP-BOTDA pump pulse; Walsh codes; distributed strain measurement; phase-shift pulse BOTDA sensor; pump light; spatial resolution measurement; Optical pulses; Optical pumping; Optical sensors; BOTDA; distributed fiber sensor; stimulated Brillouin scattering;
Conference_Titel :
Photonics (ICP), 2013 IEEE 4th International Conference on
Conference_Location :
Melaka
Print_ISBN :
978-1-4673-6073-9
DOI :
10.1109/ICP.2013.6687100
