Air backing optical fiber hydrophone probe with integrated sensibilization structure

Abstract

The invention discloses an air backing fiber-optic hydrophone probe with an integrated sensibilization structure. The fiber-optic hydrophone probe is composed of optical fiber coils adhering to the surface of the sensibilization structure. Deflection, under the action of sound pressure, the sensibilization structure strains to drive the length of optical fiber to be changed. The sensibilization structure adopts an addictive manufacturing technology for integrated machiningand takes an internal closed cavity as an air backing to improve the sensitivity of a hydrophone. The optical fiber is wound to form the optical fiber coils in the required shape. The fiber-optic hydrophone probe retains the advantages that the technique of the air backing optical fiber hydrophone probe is mature, and theperformance of the air backing optical fiber hydrophone probe is easy to improve. The integrated sensibilization structure machined by the addictive manufacturing technology is adopted, the problem of efficacy losing of sealed materials needed by assembly structure is avoided, and the environmental performance and long-term stability of the air backing hydrophone probe are effectively improved.

Description

technical field [0001] The invention relates to an optical fiber hydrophone probe, mainly an air-backed optical fiber hydrophone probe with an integrated sensitization structure. Background technique [0002] Optical fiber hydrophone is a fiber optic sensor that converts sound pressure signals in water into detectable optical signal modulation. Because of its high sensitivity, resistance to electromagnetic environment interference, and easy multiplexing, it has developed rapidly in the military and civilian fields in recent years. . Air-backed fiber optic hydrophones are widely used because of their simple process and excellent performance. [0003] The existing air-backed fiber optic hydrophone consists of a support structure, an elastic body, and a fiber optic coil. A sealed cavity is formed between the support structure and the elastic body, and the optical fiber is wound on the elastic body. When the hydrophone is placed in the underwater acoustic field, the elastic b...

AI Technical Summary

Problems solved by technology

[0014] In view of the problem that the sealing material required for the assembly of the existing air-backed fiber optic hydrophone probe sensitization structure is prone to failure, the purpose of the present invention is to provide an air-backed fiber optic hydrophone probe with an integrated sensitization structure, through additive manufacturing The technology-processing integrated sensitization structure avoids the failure of the assembly process and sealing materials, and effectively improves the environmental performance and long-term reliability of the air-backed hydrophone probe

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