Department of Material Engineering, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan.
Sensors (Basel). 2012;12(6):7485-95. doi: 10.3390/s120607485. Epub 2012 Jun 1.
An experimental and numerical investigation is performed into the power loss induced in grooved polymer optical fibers (POFs) subjected to combined bending and elongation deformations. The power loss is examined as a function of both the groove depth and the bend radius. An elastic-plastic three-dimensional finite element model is constructed to simulate the deformation in the grooved region of the deformed specimens. The results indicate that the power loss increases significantly with an increasing bending displacement or groove depth. Specifically, the power loss increases to as much as 12% given a groove depth of 1.1 mm and a bending displacement of 10 mm. Based on the experimental results, an empirical expression is formulated to relate the power loss with the bending displacement for a given groove depth. It is shown that the difference between the estimated power loss and the actual power loss is less than 2%.
对受弯曲和拉伸复合变形的开有凹槽的聚合物光纤（POF）的功率损耗进行了实验和数值研究。考察了凹槽深度和弯曲半径对功率损耗的影响。建立了弹塑性三维有限元模型来模拟变形试件的凹槽区域的变形。结果表明，随着弯曲位移或凹槽深度的增加，功率损耗显著增加。具体来说，在凹槽深度为 1.1mm 和弯曲位移为 10mm 的情况下，功率损耗增加到 12%。基于实验结果，提出了一个经验表达式，将给定凹槽深度下的功率损耗与弯曲位移联系起来。结果表明，估计的功率损耗与实际功率损耗之间的差异小于 2%。
