Multipoint fiber-optic laser–ultrasound generation along a fiber based on the core-offset splicing of fibers

作     者：XIAOLONG DONG SHIMIN GAO JIAJUN TIAN YONG YAO 

作者机构：Department of Electronic and Information Engineering Shenzhen Graduate School Harbin Institute of Technology 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2017年第5卷第4期

页      面：287-292页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 070206[理学-声学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China(NSFC)(61575051,61675055) Shenzhen Municipal Science and Technology Plan Project(JCYJ20150529114045265,JSGG2015 0529153336124,KQCX20140521144416706) 

主　　题：core mode EDFA rate Multipoint fiber-optic laser ultrasound generation along a fiber based on the core-offset splicing of fibers 

摘      要：Fiber-optic laser–ultrasound generation is being used in an increasing number of applications, including medical diagnosis, material characterization, and structural health monitoring. However, most currently used fiber-optic ultrasonic transducers allow effective ultrasound generation at only a single location, namely, at the fiber tip, although there have been a few limited proposals for achieving multipoint ultrasound generation along the length of a fiber. Here we present a novel fiber-optic ultrasound transducer that uses the core-offset splicing of fibers to effectively generate ultrasound at multiple locations along the fiber. The proposed laser–ultrasonic transducer can produce a balancedstrength signal between ultrasonic generation points by reasonably controlling the offsets of the fibers. The proposed transducer has other outstanding characteristics, including simple fabrication and low cost.