Lissajous fiber scanning for forward viewing optical endomicroscopy using asymmetric stiffness modulation
Lissajous fiber scanning for forward viewing optical endomicroscopy using asymmetric stiffness modulation
复制标题
DOI：
10.1364/oe.22.005818
复制
发表时间：
2014-03-10
期刊：
影响因子：
3.8
通讯作者：
Jeong, Ki-Hun
中科院分区：
文献类型：
--
作者：
Park, Hyeon-Cheol;Seo, Yeong-Hyeon;Jeong, Ki-Hun
我们报告了一个完整的包装和紧凑的前视显微内镜，通过使用共振光纤扫描仪与二维Lissajous轨迹。光纤扫描器包括安装在具有四分之一电极的压电管内部的具有附加微结构的单模光纤。通过对具有硅微结构和偏移光纤片段的光纤悬臂梁的刚度进行非对称调制，完全消除了具有圆形横截面的谐振光纤的横轴之间的机械交叉耦合。Lissajous光纤扫描仪被完全包装为内窥镜导管，穿过临床内窥镜的辅助通道，并与光谱域光学相干断层扫描（SD-OCT）相结合。体外三维OCT图像沿沿着Lissajous轨迹成功重建。Lissajous扫描的预览成像功能可实现具有高时间分辨率的快速3D成像。该内窥镜导管为在胃肠内窥镜内进行按需和非侵入性光学活检提供了许多机会。(C)2014年美国光学学会
We report a fully packaged and compact forward viewing endomicroscope by using a resonant fiber scanner with two dimensional Lissajous trajectories. The fiber scanner comprises a single mode fiber with additional microstructures mounted inside a piezoelectric tube with quartered electrodes. The mechanical cross-coupling between the transverse axes of a resonant fiber with a circular cross-section was completely eliminated by asymmetrically modulating the stiffness of the fiber cantilever with silicon microstructures and an off-set fiber fragment. The Lissajous fiber scanner was fully packaged as endomicroscopic catheter passing through the accessory channel of a clinical endoscope and combined with spectral domain optical coherence tomography (SD-OCT). Ex-vivo 3D OCT images were successfully reconstructed along Lissajous trajectory. The preview imaging capability of the Lissajous scanning enables rapid 3D imaging with high temporal resolution. This endoscopic catheter provides many opportunities for on-demand and non-invasive optical biopsy inside a gastrointestinal endoscope. (C) 2014 Optical Society of America