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A Fiber Laser Vector Hydrophone

A vector hydrophone and fiber laser technology, which is used in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of poor sensitivity and high installation process requirements, achieve increased sensitivity, reduce partial attenuation effects, reduce The effect of packaging difficulty

Active Publication Date: 2021-03-02
HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the problem that the existing hydrophone installation process requires extremely high standards and poor sensitivity; the purpose of the present invention is to provide a fiber laser vector hydrophone

Method used

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  • A Fiber Laser Vector Hydrophone
  • A Fiber Laser Vector Hydrophone
  • A Fiber Laser Vector Hydrophone

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0035] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

[0036] Such as figure 1 As shown, this embodiment adopts the following technical solutions:

[0037] It includes mass plate 1, circular...

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Abstract

The invention discloses an optical fiber laser vector hydrophone, which relates to the technical field of hydrophones; technical solution: a circular shell, used for the internal structure protection of the hydrophone; at least one phase-shifting grating, installed inside the circular shell , used to measure particle vibration acceleration; at least one mass plate is installed outside the circular shell; one end of the phase shift grating is fixed on the inner wall of the circular shell, and the other end of the phase shift grating is open and connected to the mass through a light spring The light spring communicates with the circular shell and is arranged outside the circular shell, and is fixed on the circular shell. The function of the light spring is to pre-stretch the grating; the optical fiber passes through the center of the light spring and is fixed to the center of the mass sheet At , the circular shell is fixed to the frame by multiple springs. The optical fiber laser vector hydrophone disclosed by the present invention uses a phase shift grating inside the probe, and compared with the measurement signal of the optical fiber interference type hydrophone, the use of the phase shift grating makes the optical fiber hydrophone more miniaturized.

Description

technical field [0001] The invention belongs to the technical field of hydrophones, in particular to an optical fiber laser vector hydrophone. Background technique [0002] Compared with the corresponding conventional sensors, fiber optic sensors have obvious advantages in terms of sensitivity, dynamic range, and reliability. They are particularly prominent in the fields of national defense and military applications, and are listed as key national defense technologies by many countries. [0003] The optical fiber hydrophone is an instrument that detects the acoustic signal in the liquid medium by using the light transmission characteristics of the optical fiber and various modulation effects generated by its interaction with the acoustic wave in the surrounding liquid environment. Compared with traditional piezoelectric hydrophones, it has the following main advantages: wide frequency band, high sound pressure sensitivity, no electromagnetic interference, light weight, can b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 冉艳丽刘浪余建华刘德明
Owner HUAZHONG UNIV OF SCI & TECH RES INST SHENZHEN
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