High-Frequency Fiber-Optic Ultrasonic Sensor Using Air Micro-Bubble for Imaging of Seismic Physical Models
A micro-fiber-optic Fabry-Perot interferometer (FPI) is proposed and demonstrated experimentally for ultrasonic imaging of seismic physical Baby Toothbrushes models.The device consists of a micro-bubble followed by the end of a single-mode fiber (SMF).The micro-structure is formed by the discharging operation on a short segment of hollow-core fiber