Fig. 1. Schematic diagram of base structure of interferometric FBG hydrophone

Fig. 2. Minimum common-mode structure of interferometric FBG hydrophone

Fig. 3. Diagram of interferometric FBG hydrophone multiplexed structure

Fig. 4. Schematic diagram of modulation and demodulation structures of interferometric fiber Bragg grating hydrophone

Fig. 5. FBG hydrophone primitive physical images. (a) Primitive encapsulation structure before formation; (b) primitive structure after formation

Fig. 6. Measured results of acoustic pressure sensitivity of 8-1 fiber Bragg grating hydrophone

Fig. 7. Test results of background phase noise of 1-1-1-8 fiber Bragg grating hydrophones

Fig. 8. Response signal demodulation results. (a) 8-1; (b) 7-8

Fig. 9. SDM crosstalk of 7^th SDM channel

Fig. 10. WDM crosstalk of 1^st SDM channel

Fig. 11. TDM crosstalk of 1^st SDM channel. (a) WDM1; (b) WDM2