Zhou Meng, Wei Chen, Jianfei Wang, Xiaoyang Hu, Mo Chen, Yang Lu, Yu Chen, Yichi Zhang. Research Progress of Fiber Optic Hydrophone Technology[J]. Laser & Optoelectronics Progress, 2021, 58(13): 1306009
- Laser & Optoelectronics Progress
- Vol. 58, Issue 13, 1306009 (2021)
![Physical image of the Virginia-Class Nuclear submarine[7,67]](/richHtml/lop/2021/58/13/1306009/img_1.jpg)
![Physical image of the FOH array[27]](/richHtml/lop/2021/58/13/1306009/img_2.jpg)
Fig. 2. Physical image of the FOH array[27]
Fig. 3. Structure of a very low frequency interference FOH probe
Fig. 4. Frequency response of a very low frequency interferometric FOH
Fig. 5. Phase noise of a very low frequency interferometric FOH system
Fig. 6. Principle of the remote FOH array system[81]
Fig. 7. Phase noise changes with modulation frequency[93]
Fig. 8. Phase noises under different phase modulation indices[93]
Fig. 9. Output spectrum when the input power is 400 mW[98]
Fig. 10. Phase noises corresponding to different output lights[98]
Fig. 11. Physical picture of the towed line array FOH[102]
Fig. 12. Flow noise of the towed line array FOH[102]
Fig. 13. Ultra short cavity BEFL based on pump pre-amplification[115]
Fig. 14. Principle of the compact BEFL [116]
Fig. 15. Phase noise spectrum of the BEFL[121]
Fig. 16. Target orientation results of the single primitive FOVH
Fig. 17. Target orientation result of 4-primitive FOVH horizontal array. (a) Orientation result of the sound pressure sub-array; (b) orientation result of the vector array
Fig. 18. Target orientation result of the FOVH vertical array. (a) Single primitive; (b) vector vertical array[150]
Fig. 19. Structure of the FOVH
Fig. 20. Acceleration sensitivity of the FOVH
Fig. 21. Three-axis directivity of the FOVH. (a) x-axis; (b) y-axis; (c) z-axis
Fig. 22. Distributed FOH based on discrete sensitivity-enhanced structure
Fig. 23. Distributed FOH based on consecutive sensitivity-enhanced structure
Fig. 24. Structure of fading noise suppression based on frequency division multiplexing[185]
Fig. 25. Fading noise suppression effect based on frequency division multiplexing. (a) Interference signal strength position-time domain diagram; (b) phase position-spectrogram; (c) suppressed phase position-spectrogram[185]
Fig. 26. DAS system based on diversity reception and optimal weight averaging algorithm. (a) Structure diagram of the system; (b) experimental results
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