Eccentrical Bragg gratings in multimode polymer optical fibres for the 3D detection of bending
Eccentrical Bragg gratings in multimode polymer optical fibres for the 3D detection of bending
复制标题
多模聚合物光纤中的偏心布拉格光栅用于弯曲的 3D 检测
DOI：
10.1117/12.2592575
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Ludger Overmeyer
中科院分区：
文献类型：
--
作者：
Lennart Leffers;Julia Locmelis;Kort Bremer;Bernhard Roth;Ludger Overmeyer
报道了一种基于聚合物光纤布拉格光栅结构的高柔性、高弹性的新型弯曲传感器。这个概念是非常简单的，并依赖于通过接触曝光与氟化氪准分子激光器在紫外线区域和优化的相位掩模的偏心布拉格光栅到多模渐变折射率聚合物光纤的铭文。取决于聚合物光纤变形，内切布拉格光栅的晶格常数由于其相对于光纤芯的位置而被应变或压缩。这又导致布拉格波长分别向红色或蓝色波长区域移动高达1.3nm。因此，可以用灵敏度为50 pm/m-1的单个布拉格光栅观察沿沿着一个轴的变形。此外，在不同位置处刻入同一聚合物光纤中的多个布拉格光栅将允许确定光纤相对于参考系的形状变形。因此，这项技术可以成为未来医疗诊断、机器人或增强现实领域新应用的基础。
We report on a novel bend sensor with high flexibility and elasticity based on Bragg grating structures in polymer optical fibres. The concept is very simple and relies on the inscription of eccentrical Bragg gratings into multimode graded-index polymer optical fibres via contact exposure with a krypton fluoride excimer laser in the ultraviolet region and an optimized phase mask. Depending on the polymer optical fibre deformation, the lattice constant of the inscribed Bragg grating is strained or compressed due to its position relative to the fibre core. This in turn results in a shift of the Bragg wavelength of up to 1.3 nm to the red or blue wavelength region, respectively. Therefore, deformation along one axis can be observed with a single Bragg grating with a sensitivity of 50 pm/m−1. Moreover, multiple Bragg gratings inscribed into the same polymer optical fibre at different positions would allow to determine the shape deformation of the fibre relative to a reference frame. Consequently, this technology could form the basis for new applications in the areas of medical diagnostics, robotics or augmented reality in the future.
影响因子：
64.8
作者：
Sundaram, Subramanian;Kellnhofer, Petr;Matusik, Wojciech
通讯作者：
Matusik, Wojciech