Advanced fiber-optic acoustic sensors
João G. V. Teixeira, Ivo T. Leite, Susana Silva, Orlando Frazão
Photonic Sensors ›› 2013, Vol. 4 ›› Issue (3) : 198-208.
Advanced fiber-optic acoustic sensors
Acoustic sensing is nowadays a very demanding field which plays an important role in modern society, with applications spanning from structural health monitoring to medical imaging. Fiber-optics can bring many advantages to this field, and fiber-optic acoustic sensors show already performance levels capable of competing with the standard sensors based on piezoelectric transducers. This review presents the recent advances in the field of fiber-optic dynamic strain sensing, particularly for acoustic detection. Three dominant technologies are identified — fiber Bragg gratings, interferometric Mach-Zehnder, and Fabry-Pérot configurations — and their recent developments are summarized.
Acoustic sensors / fiber optics / optical fiber sensors
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