An Interferometric Optical Fiber Hydrophone Detection System
A fiber optic hydrophone and detection system technology, which is applied in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of high manufacturing cost and difficulty, and the difficulty of ensuring optical balance in the hydrophone detection system. Manufacturing cost and manufacturing difficulty, effect of suppressing optical phase noise
Active Publication Date: 2020-11-03
HUBEI UNIV OF TECH
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[0004] The embodiment of the present application provides an interferometric optical fiber hydrophone detection system, which solves the problems that the hydrophone detection system in the prior art is difficult to ensure optical balance, and the manufacturing cost and difficulty are relatively large.
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[0026] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0027] This embodiment provides an interferometric optical fiber hydrophone detection system, including: a light source modulation unit, a power equalization unit, a signal detection sensing unit, a signal processing unit, and a remote display unit; the light source modulation unit, the power equalization unit unit, the signal detection and sensing unit, the signal processing unit, and the remote display unit are sequentially connected through a photoelectric transmission cable.
[0028] Wherein, the signal detection sensing unit includes a wave splitter, a hydrophone array, and a wavelength division multiplexer, the input end of the hydrophone array is connected to the wave splitter, and the output of the hydrophone array The terminal is connect...
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The invention, which belongs to the technical field of optical fiber measurement, discloses an interference type optical fiber hydrophone detection system comprising a light source modulation unit, apower balance unit, a signal detection and sensing unit, and a signal processing unit. The signal detection and sensing unit includes a wave separator, a hydrophone array and a wavelength division multiplexer. The hydrophone array includes a plurality of hydrophone element arrays; and each hydrophone element array includes a plurality of hydrophones and two fiber deaf probes. Therefore, problems that the hydrophone detection system can not ensure the optical balancing and the manufacturing cost and difficulty are high according to the existing hydrophone system in the prior art are solved; andthus the optical balance is realized and the manufacturing cost and manufacturing difficulty of the hydrophone system are reduced.
Description
technical field [0001] The invention relates to the technical field of optical fiber measurement, in particular to an interferometric optical fiber hydrophone detection system. Background technique [0002] Optical fiber hydrophone is an underwater acoustic signal sensor based on optical fiber and optoelectronic technology. It converts underwater acoustic vibration into optical signal through high-sensitivity optical coherent detection, and transmits it to the signal processing system through optical fiber to extract the acoustic signal. information. Compared with traditional hydrophones, optical fiber hydrophones have high sensitivity and can detect weak signals; strong anti-electromagnetic interference and signal crosstalk capabilities, and can be transmitted over long distances; small in size, easy to deploy and implement, and easy to retract and deploy, high Reliability, and features such as large-scale networking. The optical fiber hydrophone measures the space signal...
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IPC IPC(8): G01H9/00
Inventor 陶青余鑫卢博闻刘顿陈列杨奇彪娄德元翟中生郑重成健
Owner HUBEI UNIV OF TECH