A Comprehensive Study on Highly Sensitive Photonics Based Acoustic Sensors for Under Water Applications

Abstract

By referring few researcher works which is related to the work of optical sensor and able to detect the acousticsignal, this review paper provides the detailed study of acoustic signal in under water. Researchers has workedwith the optical sensor and emerged as great promising sensing device. From various research papers it isobserved that the detection of acoustic signal is done with the help of various optical sensors. The varioussensors are fiber bragg grating (FBG) sensor, fiber optic interferometric sensor and Mach zehnderinterferometer (MZI) sensor. So this review paper covers all these sensors and their application with aparticular focus on the different structure of optical sensor. The structure of the various sensors and theirapplication is discussed from the different research paper.The overall work is reported and corresponding result is demonstrated. From the demonstrated work it has beenobserved that with good quality and proper sensitivity in all optical sensors are able to detect the acoustic signalfor under water due to their compact size and able to provide accurate results.

Keywords

• optical fiber acoustic sensing
• mach zehnder interferometer
• fiber optic interferometric sensor
• piezo electric sensor
• fiber bragg grating (fbg) sensor
• photonic crystal fiber (pcf)