Application of noise-reduction distributed optical fiber hydrophone based on rayleigh scattering

A distributed optical fiber and Rayleigh scattering technology, applied in optical fiber transmission, using wave/particle radiation, eliminating distortion/dispersion, etc., can solve problems that are difficult to repair and require a lot of manpower and material resources

Inactive Publication Date: 2018-07-17
光子瑞利科技(北京)有限公司
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Problems solved by technology

The application of this large-scale piezoelectric detection system will be difficult t

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  • Application of noise-reduction distributed optical fiber hydrophone based on rayleigh scattering
  • Application of noise-reduction distributed optical fiber hydrophone based on rayleigh scattering
  • Application of noise-reduction distributed optical fiber hydrophone based on rayleigh scattering

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Embodiment Construction

[0014] In the following description, for purposes of illustration rather than limitation, specific details, such as specific system architectures, interfaces, and techniques, are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those familiar with the field of fiber optic security that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0015] see figure 1 , figure 1 It is the internal structure diagram of the optical amplification system adopted, including:

[0016] According to the requirements of the optical amplifier in ocean hydrophone and noise reduction, it can be divided into three types: power amplification (BA), line amplification (LA), and pre-amplification (PA). It is al...

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Abstract

The invention discloses a noise-reduction distributed optical fiber hydrophone array technology based on rayleigh scattering. The sensor technology can eliminate the disturbance noise through a rayleigh scattering mechanism, an optical amplifier and self-modulation, thereby ensuring the obtaining of the complete underwater acoustic wave optical fiber change; the optical time domain reflecting positioning and optical phase change caused by the pressure effect on the optical fiber by the underwater acoustic wave caused by the external audio are analyzed to obtain information in the related underwater acoustic. Compared with the traditional piezoelectric hydrophone, the distributed optical fiber hydrophone array technology has the advantages of being high in detection sensitivity, and wide incorresponding underwater frequency band. On the aspect of use material, the optical fiber is used as the carrier to transmit and sense the information, the ultra-long distance transmission can be performed, and the transmission can be interfered by electromagnetism and is free from the leakage danger.

Description

technical field [0001] The invention relates to the field of optical fiber security communication, in particular to a system and device for noise reduction distributed optical fiber hydrophone based on Rayleigh scattering. Background technique [0002] In the marine network security system, the fiber optic hydrophone array is one of the important applications. Most of his essential applications are piezoelectric detection systems. However, traditional piezoelectric detection systems are vulnerable to various air currents in the ocean, as well as marine organisms and man-made damage. The application of this large-scale piezoelectric detection system will be difficult to repair once it is damaged, and it will cost a lot of manpower and material resources. Therefore, optical fiber sensing hydrophone technology has become the best solution in marine security. Compared with the traditional piezoelectric detection system, the application of optical fiber hydrophone has the adva...

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Application Information

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IPC IPC(8): H04B10/2507H04B10/071G01H9/00
CPCG01H9/004H04B10/071H04B10/2507
Inventor 刘浩宇魏嘉刘本刚柴军杰李建彬
Owner 光子瑞利科技(北京)有限公司
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