Fig. 1. Schematic diagram of hydrophone encapsulated structure

Fig. 2. Schematic diagram of bending deformation of hydrophone under acceleration

Fig. 3. Schematic diagram of bending deformation of hydrophone with polyurethane end surface under acceleration

Fig. 4. Relationship between acceleration sensitivity of hydrophone and elastic modulus E. (a) Difference of elastic modulus; (b) difference of Poisson's ratio; (c) difference of height

Fig. 5. Relationship between acceleration sensitivity of hydrophone and the Poisson's ratio ν. (a) Difference of elastic modulus; (b) difference of Possion's ratio; (c) difference of height

Fig. 6. Relationship between acceleration sensitivity of hydrophone and the height l. (a) difference of elastic modulus; (b) difference of Possion's ratio; (c) difference of height

Fig. 7. Schematic of testing system for acceleration sensitivity

Fig. 8. Experimental acceleration sensitivity frequency response curves of DFB fiber laser hydrophone

Fig. 9. Prototype sample of DFB fiber laser hydrophone

Fig. 10. DFB fiber laser hydrophone array

Fig. 11. DFB fiber laser hydrophone towed line array dynamic towed test system

Fig. 12. DFB fiber laser hydrophone towed line array dynamic towed direction estimation