Fixed-axis fiber distributing device of polarization-maintaining optical fiber and method thereof

Abstract

The invention provides a fixed-axis fiber distributing device of polarization-maintaining optical fiber and a method thereof. The fixed-axis fiber distributing device of the polarization-maintaining optical fiber comprises a stress axis angle detection mechanism, a stress axis control mechanism, an automatic glue dispensing mechanism, a fiber moving mechanism, an image processing unit and a control unit, wherein the stress axis angle detection mechanism is used for detecting light intensity information of light transmitting through a base belt and the polarization-maintaining optical fiber inreal time; the image processing unit is used for calculating an azimuth angle of an optical fiber stress axis according to the light intensity information; the control unit is used for judging whetherthe azimuth angle of the optical fiber stress axis meets the requirement or not, rotating the angle of optical fiber through the stress axis control mechanism if the azimuth angle of the optical fiber stress axis does not meet the requirement; carrying out a glue dispensing operation through the automatic glue dispensing mechanism if the azimuth angle of the optical fiber stress axis meets the requirement, and subsequently driving the base belt and the optical fiber to move through the fiber moving mechanism. Through the fixed-axis fiber distributing device of polarization-maintaining opticalfiber and the method thereof, the polarization-maintaining optical fiber can be paved on the base belt according to the set angle to form a pressure sensor; the accuracy of a sensing unit of the pressure sensor can be ensured.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a polarization-maintaining optical fiber fixed-axis fiber distribution device and method. Background technique [0002] Polarization-maintaining fiber can maintain the polarization state of linearly polarized light propagating along the polarization axis, and has applications in various fields of fiber optic sensing. Especially in the application of pressure sensing, the azimuth of the stress axis has a great influence on the performance and sensitivity of the system. When the polarization-maintaining fiber is used in a pressure sensor, in order to ensure the consistency of the pressure response of the fiber at each point, it is necessary to strictly control the azimuth of the stress axis of the polarization-maintaining fiber. Therefore, the precise control of the azimuth angle of the stress axis of polarization-maintaining optical fiber is the key to the applicati...

AI Technical Summary

Problems solved by technology

However, how to apply the polarization-maintaining fiber polarization stress axis measurement technology to the polarization-maintaining fiber fixed-axis distribution, and how to lay the polarization-maintaining fiber on the baseband at the target angle as a pressure sensor has not yet been published or reported.

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