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Transmission type optical fiber turbulence sensor

A sensor and transmissive technology, applied in the field of atmospheric optical fiber sensors, can solve the problem of no sensor in the optical fiber interference turbulence measurement system, and achieve the effects of small size, high precision and fast response

Inactive Publication Date: 2013-02-13
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a transmissive optical fiber turbulence sensor to solve the problem that the prior art optical fiber interference turbulence measurement system does not have a special sensor

Method used

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  • Transmission type optical fiber turbulence sensor
  • Transmission type optical fiber turbulence sensor
  • Transmission type optical fiber turbulence sensor

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Embodiment Construction

[0032] Such as figure 1As shown, a transmission optical fiber turbulence sensor includes a vibration isolator 2 and a fork-shaped bracket 1. The vibration isolator 2 supports the bracket 1 at the center of gravity of the bracket through the upper rod 201, and the vibration isolator 2 is supported by the lower part. Rod 202 is installed on the base 203, and support 1 is made of fork plate 101, and the fork arm 102 that is integrally formed with fork plate 101 and mutual symmetry, and two fork arms 102 arm ends are opposite, and the fork plate 101 of support 1 is provided with and fork Arms 102 correspond to two optical fibers 301, 302 one by one. One end of each optical fiber is led from the fork plate 101 along the corresponding fork arm 102 to the arm end of the fork arm 102, and an optical fiber collimator is connected at the arm end position of the fork arm 102. 4, the other end of the optical fiber 3 is drawn from the fork plate 101 and connected to the optical fiber conne...

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Abstract

The invention discloses a transmission type optical fiber turbulence sensor. The transmission type optical fiber turbulence sensor comprises a vibration isolator and a bracket, wherein a connecting rod on the upper part of the vibration isolator supports the bracket; a supporting rod on the lower part of the vibration isolator is arranged on the pedestal; the bracket consists of a forked plate and symmetrical forked arms; two paths of optical fiber are arranged on the forked plate; one end of the each path of optical fiber is led to the end of each forked arm; an optical fiber collimator is connected with the end of each forked arm; the other end of the optical fiber is led out of the forked plate and is connected with an optical fiber connector; each path of optical fiber is connected with an optical fiber coupler and an optical isolator; and the optical fiber couplers of the two paths of optical fiber are connected with each other through the optical fiber. Based on the laser interference measurement principle, the transmission type optical fiber turbulence sensor has the characteristics of high precision, quick response, small volume, high stability, corrosion resistance, convenience of forming sensor arrays and the like. The transmission type optical fiber turbulence sensor can precisely detect tiny refractive index change of atmospheric optical turbulence, and related optical turbulence intensity, time and spatial frequency spectrum and the like.

Description

technical field [0001] The invention relates to the field of atmospheric optical fiber sensors, in particular to a transmission type fiber optic turbulence sensor. Background technique [0002] The existence of atmospheric turbulence directly affects the propagation of light, resulting in the effect of turbulent atmospheric light propagation. Atmospheric turbulence is an irregular random fluctuation of the atmosphere, which mainly includes the fluctuation of physical properties such as vector wind field and scalar refractive index field with time. The fluctuation of wind speed is usually called dynamic turbulence, while the fluctuation of refractive index closely related to light propagation is called optical turbulence. The impact of optical turbulence on light propagation is mainly concentrated in the near-axis range of straight-line propagation. Typical examples include: looking at distant targets through asphalt roads under the scorching sun, you can find air transpirat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/45
Inventor 梅海平肖树妹邵士勇黄启凯饶瑞中
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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