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Optical fiber macrobending deformer with adjustable bending radius

A technology of optical fiber macro-bending and bending radius, which is applied in the measurement of the change force of the optical properties of the material when it is stressed, can solve the problems that are not suitable for embedding metal structures, and achieve the effect of easy removal and fixation

Inactive Publication Date: 2016-04-13
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fiber optic microbend sensing is one of the more mature sensing methods, but because the fiber optic microbend sensing system requires an external deformer, it is not suitable for embedding in metal structures

Method used

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  • Optical fiber macrobending deformer with adjustable bending radius
  • Optical fiber macrobending deformer with adjustable bending radius
  • Optical fiber macrobending deformer with adjustable bending radius

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Embodiment Construction

[0020] For ease of understanding, the present invention will be further explained below in conjunction with the accompanying drawings and preferred embodiments.

[0021] Such as figure 1 As shown, an optical fiber macrobending deformer with adjustable bending radius includes a stepped conical macrobending structure 2, a support bar 3, a container 4, an optical fiber guide 6, and a retaining ring 7. The stepped conical macrobending structure 2 includes The cylindrical part 21 and the stepped conical part 22, the cylindrical part 231 is provided with a support bar insertion hole 21, the support bar 3 is inserted into the support bar insertion hole 21 of the stepped conical macrobending structure 2, the support bar 3 is mounted on the container 4, and the step The stepped conical part 22 of the conical macrobending structure 2 protrudes into the container 4 , and the fiber guides 6 are arranged on the side walls of the container 4 , and the stepped conical part 22 is fitted with ...

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Abstract

The invention provides an optical fiber macrobend deformation device capable of adjusting the bending radius. A metalized optical fiber can form a macrobend optical fiber sensor with the bending diameter no smaller than 4 mm through a step cone macrobend structure, an elastic blocking ring prevents a macrobend optical fiber from sliding, a supporting strip fixes the step cone macrobend structure, and a tail fiber is led out to be in a flat state through an optical fiber guiding device so as to guarantee that macrobends are positioned in the same plane.

Description

technical field [0001] The invention belongs to the field of optical fiber sensing, and in particular relates to an optical fiber macrobending deformer. Background technique [0002] Optical fiber intelligent structure can be applied to many fields such as aerospace and civil industry, and the application prospect is very broad. However, at present, there are few optical fiber smart structures based on metal materials at home and abroad. The key reason is that it is very difficult to embed optical fiber sensors inside the metal. The forming temperature of metal materials is very high, and the sensors are difficult to withstand high temperature damage. Research on fiber optic high temperature sensors mainly focuses on special gratings (such as some fiber Bragg gratings, long-period fiber gratings) and interferometers. The realization of these fiber grating-type high-temperature sensors requires special doping of fibers, high-energy lasers to write gratings in the fiber drawi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/24
Inventor 冯艳
Owner NANCHANG UNIV