Encapsulation apparatus for exerting prestress of optical fiber grating sensor

A fiber grating and packaging device technology, which is applied in the direction of transmitting sensing components, clad optical fibers, optical waveguides and light guides with optical devices, can solve the problem of inability to continuously control the magnitude of external force, the inability to realize the magnitude of prestress, and no products for sale, etc. problem, to achieve the effect of low cost, easy operation and small volume

Inactive Publication Date: 2008-12-17
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when the fiber grating sensor is packaged, the axial prestress of the fiber grating is mostly applied by hanging weights, etc. These methods cannot continuously control the magnitud

Method used

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  • Encapsulation apparatus for exerting prestress of optical fiber grating sensor
  • Encapsulation apparatus for exerting prestress of optical fiber grating sensor

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Experimental program
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Embodiment 1

[0017] exist figure 1 Among them, the device for applying prestress to the packaged fiber grating sensor of this embodiment consists of a left clamping frame 2, a platform 3, a right clamping frame 5, a right lifting rod 6, a right lifting rod cover 7, a fastening screw 8, and a right moving platform 9. Right screw sleeve 10, lateral displacement adjustment screw 11, right mounting seat 12, platform lifting rod cover 13, platform lifting rod 14, base 15, left mounting seat 16, longitudinal displacement adjusting screw 17, left screw sleeve 18, left movement Platform 19, left elevating rod cover 20, left elevating rod 21 are connected and formed.

[0018] On the base 15, the left mounting seat 16 and the right mounting seat 12 are fixedly connected with the threaded fastening connector. Consistent, the length direction of the right mounting base 12 is consistent with the length direction of the base 15, the upper surface of the left mounting base 16 and the right mounting base...

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PUM

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Abstract

A package device for applying pre-stress on a fiber grating sensor comprises, on a pedestal, a left mounting base connected with a left moving stage, a right mounting base connected with a right moving stage, a platform lifting rod sleeve arranged between the left mounting base and the right mounting base, a left lifting sleeve arranged on the left moving stage, a right lifting rod sleeve arranged on the right moving stage, a translation conversion mechanism arranged on the left and the right moving stages, a left lifting rod arranged on the top of the left lifting rod sleeve and connected with a left clamp frame, a right lifting rod arranged on the top of the right lifting rod sleeve and connected with a right clamp frame, and a platform lifting rod arranged on the upper end of the platform lifting rod sleeve and connected with a platform. The package device has the advantages of simple mechanical structure, small size, low cost, easy operation, etc., and can be used in a temperature range of subzero 25 DEG C to above-zero300 DEG C to achieve high-temperature curing package when applying pre-stress to a fiber grating. The fiber grating sensor packaged by the device has no chirp and waveform aberration, thus ensuring the repeatability and the linearity of the sensor.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensors, and in particular relates to a packaging device for optical fiber grating sensors. Background technique [0002] The fiber Bragg grating sensor is based on the center wavelength shift of the fiber grating reflection spectrum or transmission spectrum caused by the measured physical quantity. The measurement of the physical quantity to be measured can be realized by detecting the wavelength drift. It is a wavelength modulation sensor. It has strong anti-electromagnetic interference ability, With many advantages such as high sensitivity, small size, light weight, corrosion resistance, wide measurement range, easy integration, simple structure, and easy reuse, it can form an intelligent distributed sensor network. When the bare fiber grating is buried inside the material to be tested, it can realize multi-point distribution, simultaneous distinction, real-time online and permanent monit...

Claims

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Application Information

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IPC IPC(8): G01D5/353G02B6/02
Inventor 乔学光王宏亮冯德全周红
Owner XI'AN PETROLEUM UNIVERSITY
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