Optical fiber ring precision winding method

Abstract

The invention belongs to the technical field of manufacturing of an optical fiber ring of an optical fiber gyro, and in particular relates to an optical fiber ring precision winding method. The methodcomprises the following steps: determining the length of optical fiber and the structure of the optical fiber ring; processing winding tooling; selecting suitable polarization maintaining optical fiber; winding single mode optical fiber; and winding the polarization maintaining optical fiber. The method needs to solve the problems that when a large-length optical fiber ring is wound, the existingoptical fiber winding method cannot guarantee the geometric symmetry of the optical fiber ring, the zero-drift amount of the optical fiber ring under the variable temperature condition is too large,and the precision of an inertial gyroscope is influenced. By customizing of the special-sized single-mode optical fiber and winding tooling, the gap between the optical fiber can be controlled when the polarization-maintaining optical fiber is wound, and the number of turns of the optical fiber in each layer is fixed. Based on a four-pole symmetrical winding method, the geometric symmetry of the optical fiber is finally ensured, the zero-drift amount of the optical fiber ring under the variable temperature condition is reduced, and the precision of the inertial gyroscope is improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing optical fiber rings of optical fiber gyroscopes, and in particular relates to a precision winding method for optical fiber rings. Background technique [0002] Temperature performance has always been a key indicator of fiber optic gyroscope engineering. Among the various components of the fiber optic gyroscope, the influence factor of the fiber optic ring on the temperature performance of the fiber optic gyroscope can reach 90%. For the fiber optic ring, its internal stress state and geometric symmetry directly determine the temperature characteristics of the fiber optic ring. How to suppress the non-reciprocity of the optical path induced by temperature is the most critical research content in the fiber optic gyro technology. Generally, the fiber ring is made of polarization-maintaining fiber. Therefore, the winding precision must be guaranteed during the winding process of the fiber ring....

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved in the present invention is: the existing optical fiber winding method cannot guarantee the geometric symmetry of the optical fiber ring when winding a large-length optical fiber ring, so that the zero position drift of the optical fiber ring under variable temperature conditions is too large, affecting Accuracy of inertial gyro

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