摘要：Polarization controllers （PCs） are indispensable passive components for state of polarization （SOP） control in optical fiber communication systems. In order to overcome the disadvantages of existing polarization controller （PC）, a novel PC based on the artificial birefringence is designed in this paper. The PC results from the concatenation of 3 phase retardation control units each of which consists of two polarization beam splitters, two prisms and one piezoz-lectric transducer （PZT） piezoelectric ceramic. The experimental results show that the proposed PC can convert an arbitrary input SOP to any expected output one with high accuracy under low control voltage.

摘要：为了解决生产线上人工检测光滑球面缺陷效率低下的问题,设计了一种基于机器视觉的实时工件检测自动分拣系统,系统包括图像采集和处理、可编程逻辑控制器、数据统计存储、人机交互等模块。光滑球面易反光形成反光区域,通过滤波降噪,二值化等方法处理反光区域将缺陷信息从中分离出来,然后统计标定连通域特性实现缺陷自动检测,最后通过用于过程控制的标准协议驱动可编程控制器完成不合格品分拣动作。试验结果表明:该系统可以满足实时自动分拣的要求。