Title :
Brillouin optical correlation domain analysis in linear configuration based on differential lock-in detection
Author :
Ji Ho Jeong ; Kyu Hwang Chung ; Kwanil Lee ; Kwang Yong Song ; Je-Ha Lee ; Je-Myung Jeong ; Sang Bae Lee
Author_Institution :
Center for Opto-Electron. Convergence Syst., Korea Inst. of Sci. & Technol. (KIST), Seoul, South Korea
Abstract :
Brillouin optical correlation domain analysis (BOCDA) in linear configuration is demonstrated newly based on differential lock-in detection. Three-fold enhancement in the spatial resolution is achieved compared to the former system based on beat-lock-in detection, as well as the simpler configuration for the signal processing. Distributed strain measurement over a 57-m test fiber with a 10-cm spatial resolution is presented as a proof-of concept.
Keywords :
fibre optic sensors; optical correlation; strain measurement; strain sensors; BOCDA; Brillouin optical correlation domain analysis; differential lock-in detection; distance 57 m; distributed strain measurement; fiber sensor; linear configuration; spatial resolution enhancement;
Conference_Titel :
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-759-5
DOI :
10.1049/cp.2013.1559
