Fiber loop winding method for improving optical path reciprocity of fiber gyroscope

Abstract

The invention belongs to fiber loop winding technology, and relates to a fiber loop winding method for improving optical path reciprocity of a fiber gyroscope. By a two-time step-by-step regulation method, framework width is regulated to be accurately equal to odd times of the radius of a fiber, the numbers of turns of layers in a fiber loop are accurately controlled to be equal, corresponding fiber section positions are approximate, so that correspondence and length symmetry of fiber positions of corresponding turns of adjacent layers in the fiber loop are improved, residual errors in each period are zero after multi-pole symmetric cancellation such as quadrupole symmetric cancellation, optical path reciprocity of the fiber gyroscope is effectively improved, and accuracy and environmentaladaptability of the fiber gyroscope are improved.

Description

technical field [0001] The invention belongs to the optical fiber wrapping technology, and relates to an optical fiber wrapping method for improving the reciprocity of the optical path of the fiber optic gyroscope. Background technique [0002] Optical path reciprocity is used to evaluate the similarity of the optical paths on both sides of the optical fiber with respect to the midpoint symmetry, and is the basis for the accuracy and environmental adaptability of the fiber optic gyroscope. The fiber optic ring is the core component of the fiber optic gyro optical path, and it is sensitive to angular velocity. [0003] When the optical fiber ring is actually used, its winding method directly determines the optical path reciprocity of the optical fiber ring. [0004] At present, the optical fiber winding system in the optical fiber gyroscope generally adopts the orthogonal four-pole symmetrical winding scheme with a difference of 1 turn between adjacent layers, which is easy ...

AI Technical Summary

Problems solved by technology

[0004] At present, the optical fiber winding system in the optical fiber gyroscope generally adopts the orthogonal four-pole symmetrical winding scheme with a difference of 1 turn between adjacent layers, which is easy to realize, but the position symmetry and length symmetry of the optical fiber inside the optical fiber ring are destroyed, and the multi-pole symmetrical cancellation After that, there is a residual error, and the reciprocity of the optical path is lost, which affects the accuracy and environmental adaptability of the fiber optic gyroscope.

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