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Carbon fiber packaged optical fiber Bragg grating sensor and manufacturing method thereof

A fiber Bragg and grating sensor technology, which is applied in the use of optical devices to transmit sensing components, installation, optics, etc., can solve the problems of unsatisfactory sensor data linearity, complicated installation, protection and debugging, and unsatisfactory sensitivity. Excellent sensing characteristics, low cost of materials, improved sensitivity and linearity

Inactive Publication Date: 2011-09-21
黄堃
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Problems solved by technology

[0018] Most of the existing sensor carbon fiber packaging is embedded, the sensor packaging process and the later installation, protection and debugging are complicated, and the price is relatively expensive. However, the sensitivity of the sensor made for the convenience of installation and packaging process is often not as high as Requirements, and in the prior art, the data linearity of the sensor is often not ideal, and there are strict restrictions on the environment of the above package

Method used

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  • Carbon fiber packaged optical fiber Bragg grating sensor and manufacturing method thereof
  • Carbon fiber packaged optical fiber Bragg grating sensor and manufacturing method thereof
  • Carbon fiber packaged optical fiber Bragg grating sensor and manufacturing method thereof

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0044] The fiber grating is packaged in a small sheet of carbon fiber. The specific method of packaging is to remove a carbon fiber material of sufficient size, cover the non-functional surface with tape for easy cutting, and cut out two peanut-shaped carbon fiber sheets through the template. Since the carbon fiber sheet is required to cover the entire FBG, the distance between the upper and lower centers of the carbon fiber sheet is required to be greater than 50mm, but its width can be arbitrarily widened according to actual needs. Apply resin glue evenly on the carbon fiber functional surface, apply a certain prestress to the fiber grating, straighten and fix it on one of the carbon fiber symmetry lines, then cover it with another piece of carbon fiber, and then press and fix the two pieces of carbon fiber for 72 hours That's it. In application,...

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Abstract

The invention discloses a carbon fiber packaged optical fiber Bragg grating sensor and a manufacturing method thereof. By being packaged in a carbon fiber, the optical fiber Bragg grating has an excellent sensing character and maximum data linearity of 0.99949. The designed sensor has the advantages that the packaging process is simple and the material cost is low. Various individual long-term tests show that the wavelength drifting of the sensor is 0, the repeatability and stability are excellent, and the sensor is fit for large-scale batch production and meets the demand of long-term use.

Description

technical field [0001] The invention relates to an optical fiber sensing technology, in particular to an optical fiber Bragg grating sensor. Background technique [0002] Optical fiber sensing technology is a new technology formed with the development of optical fiber and optical fiber communication technology. Fiber optic sensors are fireproof, explosion-proof, high precision, low loss, small size, light weight, long life, high cost performance, good reusability, fast response, anti-electromagnetic interference, wide frequency range, large dynamic range, and easy transmission with optical fiber The system has the advantages of forming a telemetry network and is widely used in various industries. [0003] Fiber Bragg Grating Sensor (FBG) is a kind of fiber optic sensor. The sensing process based on fiber Bragg grating is to obtain sensing information by modulating the wavelength of fiber Bragg (Bragg) by external physical parameters. It is a wavelength Modulated fiber opti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/32G02B7/00
Inventor 黄堃聂翔宇姚开元刘畅
Owner 黄堃
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