Zhen Guo, Kan Gao, Hui Yang, Zhiguo Dai, Bingyan Wu, Jun Zhang. 20-mm-Diameter Interferometric Hydrophone Towed Array Based on Fiber Bragg Gratings[J]. Acta Optica Sinica, 2019, 39(11): 1106003
- Acta Optica Sinica
- Vol. 39, Issue 11, 1106003 (2019)
Fig. 1. P-FBG interferometric hydrophone. (a) Schematic diagram; (b) structure of hydrophone unit design; (c) encapsulated unit (up) and unit structure (down)
Fig. 2. Four-element P-FBG hydrophone array. (a) Hydrophone array without melting points; (b) acoustics pressure sensitivity of each unit
Fig. 3. Noise suppression in P-FBG hydrophone array. (a) Suppression of crosstalk; (b) schematic of Doppler noise
Fig. 4. Principle and results of polarization diversity receiving. (a) Schematic diagram; (b) demodulated signal of single-channel signal after 0° polarizer; (c) demodulated signal after polarization diversity receiving
Fig. 5. 32-element P-FBG hydrophone array. (a) Partial hydrophone array with 20-mm diameter; (b) 32-element FBG towed hydrophone array; (c) P-FBG hydrophone array system
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