Long-cycle fiber bragg grating fixing device with quantizable axial stress

Abstract

The invention discloses a clamping device of a fiber bragg grating, and in particular relates to a long- cycle fiber bragg grating fixing device with quantizable axial stress, which is especially used for fixing the long-cycle fiber bragg grating. The long- cycle fiber bragg grating fixing device comprises a fixing plate, a fiber fixing pile, a slide way, a thin slide column, a rotary knob, a micro screw, a stop dog and the like. The long- cycle fiber bragg grating fixing device is characterized in that a fiber is fixed on the fiber fixing pile; the rotary knob can enable the micro screw to push and pull the fixing plate at the right side, so that the fiber fixing pile on the fixing plate at the right side slides on the slide way to regulate the stress on the bragg grating; displayed number on a scale can represent the size of axial stress; the shapes of the slide way and the thin slide column and the fixation to the slide way and the thin slide column by the micro screw enable each section of the fiber, which is fixed on the device, to be at the same straight line; the stop dog guarantees the relative fixed position of the fiber bragg grating to be invariable. The long-cycle fiber bragg grating fixing device can enable the long-cycle fiber bragg grating to be fixed simply, and can enable a large number of subsequent tests to be carried out conveniently, can effectively control and change the size of the axial stress during the test process equivalently, can be used for clamping various fibers, is easy to manufacture, and is convenient to operate.

Description

technical field [0001] The invention relates to a fixing device for an optical fiber and an optical fiber grating, in particular to a fixing device capable of quantitatively changing the axial stress of a long-period optical fiber grating. Background technique [0002] As a new type of optical passive device, long-period fiber grating has only been developed for more than ten years so far, but it has shown broad application prospects. Its application involves all aspects of the field of optical fiber communication and optical fiber sensing. . Sensors based on long-period fiber gratings not only have good reliability, strong anti-interference ability, simple structure, small size, suitable for various applications, anti-electromagnetic interference, anti-corrosion, and can work in harsh chemical environments. , strong reusability and other advantages, and also overcome the shortcomings of weak sensing signal and the sensing beam is always confined inside the fiber core for t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to better fix the fiber grating, provide a fiber grating clamping device that can quantitatively change the axial stress of the fiber grating, and solve the problem of instability of the test system built in the laboratory, a large number of experimental equipment, and large material restrictions. Difficulties in conducting experiments

Images