A method and apparatus for end face axis alignment of panda-type polarization-maintaining optical fib

• Main Authors: YANG BAISONG, TAN SHUWEI, YANG BO, ZHANG YUAN
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS

The embodiment of the invention provides a method and a device for aligning the end face of a panda-type polarization maintaining fiber, wherein the method comprises the following steps: extracting acat eye image from the end face image by a ROI image segmentation technique based on the coordinates of the cladding center in the end face image of the polarization maintaining fiber and the positional relationship between the cladding center and the cat eye; the cat eye image being converted into a binary image of the cat eye, and the center coordinates of the first cat eye and the center coordinates of the second cat eye being obtained based on the binary image of the cat eye; based on the center coordinate of the first cat's eye and the center coordinate of the second cat's eye, the polarization angle of the polarization maintaining fiber being calculated, and the axis of the end face of the polarization maintaining fiber being fixed. The method and the device provided by the embodiment of the invention extrac