Title :
Simplified Brillouin optical correlation domain analysis sensor based on a chopped microwave applied single sideband electro-optic modulator
Author :
Ji Ho Jeong ; 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 :
We propose and experimentally demonstrate a novel scheme of the Brillouin optical correlation domain analysis (BOCDA) using a single sideband electro-optic modulator (SSBM). In the work, the SSBM is used to get carrier suppressed upper sideband for the pump wave, and also lock-in detection is used by applying chopped microwave to SSBM for chopping the pump wave. This implementation enables us to eliminate an additional intensity modulator (IM) for lock-in detection in conventional BOCDA scheme. In the experiment, a 100-m measurement range with 8-cm spatial resolution is successfully achieved.
Keywords :
electro-optical modulation; fibre optic sensors; microwave propagation; optical correlation; signal resolution; BOCDA; IM elimination; SSBM; additional intensity modulator elimination; carrier suppression; chopped microwave; chopped microwave applied single sideband electrooptic modulator; lock-in detection; measurement range; pump wave; simplified Brillouin optical correlation domain analysis sensor; spatial resolution; Correlation; Frequency modulation; Optical fiber sensors; Optical fibers; Probes; Scattering;
Conference_Titel :
Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC), 2013
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4799-0457-0
