A method and device for fixing the axis of a panda-shaped polarization-maintaining optical fiber end face

Abstract

An embodiment of the present invention provides a method and device for fixing the axis of a panda-shaped polarization-maintaining optical fiber end face, wherein the method includes: the coordinates of the cladding center in the end-face image of the polarization-maintaining optical fiber based on the axis to be determined and the positional relationship between the cladding center and the cat's eye , extract the cat's eye image from the end face image through ROI image segmentation technology; convert the cat's eye image into a cat's eye binary image, based on the cat's eye binary image, obtain the center coordinates of the first cat's eye and the center coordinates of the second cat's eye; based on the first cat's eye The center coordinates and the center coordinates of the second cat's eye are used to calculate the polarization angle of the polarization-maintaining fiber and complete the axis-fixing of the end face of the polarization-maintaining fiber. The method and device provided by the embodiments of the present invention extract the cat's-eye image from the end-face image through the ROI segmentation technology, which reduces the amount of computation for subsequent acquisition of the cat's-eye coordinates, shortens the calculation time, and enhances the real-time performance of the polarization-maintaining optical fiber end-face positioning method.

Description

technical field [0001] Embodiments of the present invention relate to the field of optoelectronic technology, in particular to a method and device for fixing the axis of a panda-shaped polarization-maintaining optical fiber end face. Background technique [0002] Polarization-maintaining fiber is a kind of special fiber with important use value. It has strong polarization-maintaining ability for polarized light vibrating along its polarization axis, and is widely used in the fields of optical communication and optical fiber sensing. [0003] In the application of polarization maintaining fiber, especially in the manufacturing process of polarization maintaining fiber devices, there are high precision requirements for the coupling or fusion angle of the polarization axes of two polarization maintaining fibers. Therefore, it is important to accurately determine the polarization axis of polarization maintaining fibers. A key technology in application. [0004] There are two me...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for fixing the axis of the end face of a panda-shaped polarization-maintaining optical fiber to solve the problem of poor real-time performance in the existing method for fixing the axis of the end face of a polarization-maintaining optical fiber

Images