Optimization Design of the Pressure Phase Sensitivity of the Fiber-Optic Air-Backed Mandrel Hydrophone

A New Underwater Acoustic Sensor Based on Fiber Bragg Grating Packaged with Polymer Material

“…Fiber Bragg grating hydrophone has attracted lots of attention in the field of hydro-acoustic engineering and optical fiber sensing [1]. Excepted for the inherited advantages of conventional interferometeric hydrophone [2], such as high sensitivity and resistance of crosstalk, this new type of hydrophone has many attractive virtues, including microminiaturization and wavelength-division multiplexing, and so on. Multi-point distribution measurement can be easily realized by integrating several gratings with different wavelengths into a single fiber, which is especially suitable for configuration of sensing array.…”