【摘要】 采用法拉第旋转效应自动消除全光纤口腔光学相干层析(OCT)成像系统中光纤Michelson干涉仪干涉臂单模光纤中随机偏振态变化对干涉信号的影响,使得无论样品臂和参考臂光纤中光偏振态如何发生变化,干涉信号始终保持最强。介绍了该方法的基本原理、获得了离体牙齿稳定干涉信号和二维OCT图像。更多还原

【Abstract】 We use the Faraday effect to automatically eliminate the impact of random polarization state changes in the arms of a single mode fiber Michelson interferometer for an oral all-fiber optical coherence tomography(OCT)system.Whatever the polarization state changes randomly in both sample arm and reference arm fiber,the intensity of output interference signal always maintains the strongest.The basic principles of the method using the Faraday rotation mirror in all-fiber oral OCT system are introduced,as well as the acquisition of the stable interference signal and the two-dimensional OCT image of the extracted teeth.更多还原