光纤端面参数自动化测量系统的研究

为快速、准确、方便地进行光纤端面几何参数的测量，在数字图像采集和处理的基础上，研究和设计了光纤端面参数自动化测量系统。介绍了采用图像处理方式进行光纤端面几何参数自动测量的基本原理。对比了Canny边缘检测法和高通滤波法对光纤图像进行边缘检测的效果，体现出高通滤波在光纤端面图像处理中的优势。针对普通光纤、保偏光纤和光子晶体光纤不同的端面形状，设计出利用图像处理方法自动测量各种光纤端面几何参数的软件系统。结果表明该系统可有效地测量出各类光纤端面的几何参数。

Research on automatic measurement system for fiber end-face parameters

To obtain geometric parameters of fiber end-face fast,exactly and conveniently,we researched and designed this automatic measurement system for fiber end-face parameters on the basis of digital image collection and process.In this article,theory of using digital image processing methods to measure geometric parameters of optical fiber automatically is introduced.Effects of Canny edge detection and high-pass filter method used to detect the edges of fiber end-face images are compared,and results show that high-pass filter method is more superior in fiber end-face image process.Software is designed to automatically measure fiber geometric parameters for ordinary fiber,polarization-maintaining fiber and photonic crystal fiber,with the consideration of their different end-face forms.Results show that this system can measure end-face geometric parameters of diversiform fibers effectively.