Bending measurement structure of asymmetric double-core optical fiber, experimental instrument and sensor

A dual-core optical fiber and bending measurement technology, which is applied in the direction of instruments, measuring devices, cladding optical fibers, etc., can solve the problems of low sensitivity and complex bending measurement structure, and achieve the effects of high measurement sensitivity, compact structure, and simple manufacturing process

Pending Publication Date: 2022-05-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The invention provides a bending measurement structure, an experimental instrument and a sensor of an asymmetrical double-core optical fiber, which are used to

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  • Bending measurement structure of asymmetric double-core optical fiber, experimental instrument and sensor
  • Bending measurement structure of asymmetric double-core optical fiber, experimental instrument and sensor
  • Bending measurement structure of asymmetric double-core optical fiber, experimental instrument and sensor

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[0034] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Combine below Figure 1-Figure 4 The bending measurement structure, experimental instrument and sensor of the asymmetric dual-core optical fiber of the present invention are described.

[0036] Please refer to figure 1 and figure 2 , in the embodiment of the present invention, the bending measurement structure of the asymmetric double-core optical fiber includes:

[0037] The optical fiber sensing unit ...

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Abstract

The invention relates to the technical field of bending detection, and provides a bending measurement structure of an asymmetric double-core optical fiber, an experimental instrument and a sensor. The bending measurement structure of the asymmetric double-core optical fiber comprises an optical fiber sensing unit, a bending measurement unit and a bending measurement unit, the optical fiber sensing unit at least comprises a section of double-core optical fiber, and the double-core optical fiber is provided with two asymmetric fiber cores; the optical fiber sensing unit is fixed on the bending plate, and the optical fiber sensing unit is straightly extended from one end of the bending plate to the other end of the bending plate; the light source is connected to a port at one end of the optical fiber sensing unit; and the photoelectric detection device is connected to a port at the other end of the optical fiber sensing unit. According to the bending measurement structure of the asymmetric double-core optical fiber, the characteristic that the sensitivity degrees of the two fiber cores of the double-core optical fiber to external bending changes are inconsistent is utilized, the bending degree is measured, the bending direction is distinguished, the sensitivity is high, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of bending detection, in particular to an asymmetric double-core optical fiber bending measurement structure, an experimental instrument and a sensor. Background technique [0002] Bending testing is a test to determine the mechanical properties of a material under bending load, and it is one of the basic methods for testing the mechanical properties of materials. In addition, when performing bending detection, it is also necessary to measure the bending degree of the material to obtain the mechanical properties of the material. [0003] In the prior art, in order to measure the bending degree and bending direction, multiple sets of photoelectric probes can be set in the extending direction of the measured object, and the positional deviation of the measurement point is calculated by imaging to determine the bending degree of the measured object. . [0004] However, in the bending measurement structure and...

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Application Information

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IPC IPC(8): G01B11/24G02B6/02
CPCG01B11/24G02B6/02
Inventor 颜玢玢杨会平苑金辉桑新柱王葵如
Owner BEIJING UNIV OF POSTS & TELECOMM
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