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Fiber optic hydrophone array optical path difference testing equipment, method and device

A fiber optic hydrophone and testing equipment technology, which is applied in measurement devices, optical radiation measurement, instruments, etc., can solve the problem of inability to detect the optical path difference of the fiber optic hydrophone array.

Active Publication Date: 2022-01-07
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional test equipment cannot detect the optical path difference of the fiber optic hydrophone array

Method used

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  • Fiber optic hydrophone array optical path difference testing equipment, method and device
  • Fiber optic hydrophone array optical path difference testing equipment, method and device
  • Fiber optic hydrophone array optical path difference testing equipment, method and device

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Embodiment Construction

[0054] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. A preferred embodiment of the application is shown in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0055] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to and integrally integrated with the other element, or there may be an intervening element at the same time. The terms "installation", "exit end", "injection end" and similar expressions are used herein for the purpose of description only.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The present application relates to a fiber optic hydrophone array optical path difference testing equipment, method and device. Among them, the optical path difference test equipment of the optical fiber hydrophone array divides the optical pulse signal sent by the optical pulse generator into two channels through the optical coupler, one is transmitted to the reference interferometer, and the other is transmitted to the fiber optic hydrophone array to be tested. The first incident light pulse signal entering the reference interferometer forms an interference light signal in the reference interferometer. The second incident optical pulse signal entering the fiber optic hydrophone array to be tested will be delayed into the first outgoing optical pulse signal and the second outgoing optical pulse signal under the action of the internal time division device and the interference optical path , and beat frequency interference cannot occur. At present, to realize the test of the optical path difference, it is necessary to obtain the result of the optical path difference according to the beat frequency interference. The present application enables beat frequency interference to occur between the first outgoing light pulse signal and the second outgoing light pulse signal in the compensation interferometer.

Description

technical field [0001] The present application relates to the technical field of fiber optic hydrophone arrays, in particular to an optical path difference testing equipment, method and device for fiber optic hydrophone arrays. Background technique [0002] Optical fiber hydrophone is an underwater acoustic signal sensor based on modern optical fiber and optoelectronic technology. It realizes acoustic signal measurement through high-sensitivity optical interference detection. and other fields have important applications. Obtaining the optical path difference of the fiber optic hydrophone is very important for the sensitivity performance and system noise of the fiber optic hydrophone. Therefore, accurate testing of the optical path difference is required in the design, manufacturing and other links. At present, an array of fiber optic hydrophones is often used, not just a single fiber optic hydrophone. [0003] During the implementation process, the inventors found that the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00G01J9/02
CPCG01H9/004G01J9/02G01J2009/0226
Inventor 李树旺路国光赖灿雄黄云恩云飞
Owner CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST