Single fiber interferometric acoustic sensor

Acousto-Ultrasonic Optical Fiber Sensors: Overview and State-of-the-Art

“…Further work on this method is presented by Bucaro and Carome in [49], and by Layton and Bucaro in [50]. The detection method is similar; however, the technique was less sensitive than the two beam method, but much more simple to implement.…”

“…The detection method is similar; however, the technique was less sensitive than the two beam method, but much more simple to implement. The work in [49] also uses a single-mode fiber in a Fabry-Perot configuration. This method retained the high sensitivity, while having a simple configuration.…”

Fiber Optic Acoustic Transduction

“…A principal advantage possessed by fiber acoustic sensors is their geo metric versatility (Bucaro, 1978). Some examples are shown in Fig.…”

“…In an attempt to eliminate this complexity, Layton and Bucaro (1979) and Bucaro and Carome (1978) proposed es tablishing the interferometer within a single fiber. This necessitates the use of suitable fiber-to-fiber 3 dB couplers in order to form the fiber interferometer.…”

The Research on Information Representation of Φ-OTDR Distributed Vibration Signals

“…It serves as a typical technique for monitoring distributed vibrations. At present, it has a wide range of applications in the field of large building structure, health monitoring [1], perimeter security of important places [2], and so on. However, we hope to grasp its monitoring state more accurately, understand its vibration mode better, and enhance the monitoring efficiency.…”