A fiber grating sensor packaging device and method

Abstract

The invention relates to an optical fiber grating sensor packaging device, which comprises a base, a worktable, a heating device, a glue coating device, two optical fiber clamping mechanisms and a prestressing adjusting device. The prestressing adjusting device is arranged on the base; one of the two optical fiber clamping mechanisms is arranged on the output end of the prestressing adjusting device and the other one is arranged on the base; the optical fiber clamping mechanism arranged on the output end of the prestressing adjusting device adjusts the distance from the optical fiber clampingmechanism to the other fiber clamping mechanism by the action of the prestressing adjusting device; the worktable is arranged on the base which is located between the two optical fiber clamping mechanisms; and the heating device is arranged between the base and the worktable. According to the optical fiber grating sensor packaging device and the method, which has the advantages of easy operation,stable and reliable work, and fine adjustment, constant prestressing can be applied to the optical fiber grating sensor, and the same pre-stress can be applied to avoid optical fiber grating defects and waveform distortion, therefore stable and good consistency of wavelength temperature characteristics is guaranteed.

Description

technical field [0001] The invention relates to a fiber grating sensing technology, in particular to a fiber grating sensor packaging device and method. Background technique [0002] Fiber Bragg Grating (FBG) has the characteristics of small size, light weight, small splicing loss, strong anti-electromagnetic interference ability, high sensitivity, and can be embedded, and its resonant wavelength is compared with changes in external environments such as temperature, strain, refractive index, and concentration. It is sensitive and has good linear response, so it has been widely used in the field of optical fiber communication and sensing. Fiber Bragg gratings can be made into strain sensors, temperature sensors, acceleration sensors, displacement sensors, pressure sensors, flow sensors, liquid level sensors and other sensors through different packaging methods. In recent years, fiber grating sensors have also been widely used in civil and water conservancy engineering, bridg...

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Problems solved by technology

[0004] At present, when packaging fiber grating sensors, such problems as applying pretightening force are seldom considered. Some of the packaging devices that apply prestress to the axial direction of fiber gratings basically use methods such as hanging weights, which cannot continuously control the magnitude of the external force. , so the pre-tightening force applied to each packaged fiber grating sensor is different, which will have a certain impact on the measured value of the fiber grating sensor

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