Method for improving optical fiber ring quality by utilizing distributed polarization interference detection technology

Abstract

The invention relates to a method for controlling and improving optical fiber ring quality, belonging to the optical measurement and optical fiber sensing technical field. The method includes that: optical fiber ring or raw material optical fiber for optical fiber ring to be measured is subject to polarization interference measurement, polarization interference strength at corresponding position of the optical fiber ring or raw material optical fiber for optical fiber ring to be measured is obtained, position of quality defect and defect degree of the optical fiber ring or raw material optical fiber for optical fiber ring are determined according to the obtained polarization interference position and polarization interference strength; optical fiber ring winding technology is improved or option of raw material optical fiber is determined according to the polarization interference strength of all positions of the optical fiber ring or raw material optical fiber for optical fiber ring corresponding to the position of quality defect of the optical fiber ring or raw material optical fiber for optical fiber ring and defect degree. The invention can conveniently and rapidly completes quality determination on defect distribution of optical fiber ring in high precision and is beneficial to realizing batch production and detection of optical fiber ring.

Description

technical field [0001] The invention belongs to the technical fields of optical measurement and optical fiber sensing; in particular, it relates to a method for improving the quality of optical fiber rings by using distributed polarization crosstalk detection technology to detect the quality of optical fiber rings and raw optical fibers used by angle-changing optical fiber sensors (also known as optical fiber gyroscopes) . Background technique [0002] The fiber optic ring is the core component of the fiber optic angle sensor (also known as the fiber optic gyroscope), and its winding quality directly determines the accuracy of the fiber optic gyroscope. At present, traditional fiber ring detection methods, such as judging the quality of polarization maintaining fiber rings by means of extinction ratio or optical time domain reflectometry (OTDR), cannot fully and accurately reflect the winding quality of fiber rings, and thus cannot Improving the quality of optical fiber rin...

AI Technical Summary

Problems solved by technology

These are indirect reflections of the winding quality, and cannot directly monitor the influence of the winding process on the fiber performance

In the aspect of using distributed sensing means to detect the fiber ring, the more traditional method is to use BOTDR (Brillouin Time Domain Reflectometer) to detect the stress of the fiber ring, but the spatial resolution and sensing sensitivity of this method are low, and it is difficult to realize online Accurately monitor the quality of fiber optic rings

Finally, it is difficult to realize the thermal stress detection of the finished product after the optical fiber wrapping is completed.

Images