Jeong, Ji Ho Lee, Kwanil Jeong, Je-Myung Lee, Sang Bae 2024-01-19T12:38:23Z 2024-01-19T12:38:23Z 2022-03-07 2011 0277-786X https://pubs.kist.re.kr/handle/201004/115735 We propose a novel technique for expansion of spatial measurement range in a Brillouin optical correlation domain analysis (BOCDA) sensor system. Unlike conventional BOCDA, which has only a single correlation peak within the sensing fiber, the proposed scheme has multiple correlation peaks within the sensing section, and enables us to obtain selectively the physical information at a position corresponding to each correlation peak since the fiber under test consists of different kinds of fibers with different Brillouin frequency shifts. Using the proposed technique, we have successfully expanded a measurement range while maintaining the spatial resolution. English SPIE-INT SOC OPTICAL ENGINEERING Expansion of spatial measurement range in a correlation based Brillouin optical sensing system Conference 10.1117/12.884641 1 21st International Conference on Optical Fiber Sensors, v.7753 21st International Conference on Optical Fiber Sensors 7753 US Ottawa, CANADA 2011-05-15 21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS 000293567800082 2-s2.0-79957998194 Proceedings Paper