Institute of Telecommunications and Multimedia Applications (iTEAM), Universitat Politècnica de València, Camino de Vera, s/n 46022 Valencia, Spain.
Brussels Photonics (B-PHOT), Department of Applied Physics and Photonics, Vrije Universiteit Brussel and Flanders Make, Pleinlaan 2, B-1050 Brussels, Belgium.
Sensors (Basel). 2020 Sep 21;20(18):5405. doi: 10.3390/s20185405.
A plastic filament of poly (methyl methacrylate) (PMMA) was fabricated by extrusion. The mode confinement was simulated using numerical software. The idea is to study how the light intensity changes inside the plastic optical fiber (POF) when a bending in multiple directions is applied. The results obtained from the simulation were compared to the experimental observations. The non-circular shape of the POF allows sensing a rotation applied as well. The angle of rotation was obtained processing two images of the end facet of the fiber (one with the fiber in a reference position and one with the rotated fiber), using an intensity-based automatic image registration. The accuracy in the rotation calculation was of 0.01°.
通过挤出工艺制造了聚甲基丙烯酸甲酯（PMMA）的塑料长丝。使用数值软件对模式限制进行了模拟。目的是研究当在多个方向上施加弯曲时，塑料光纤（POF）内部的光强如何变化。将模拟结果与实验观察结果进行了比较。POF 的非圆形形状也允许感应所施加的旋转。通过使用基于强度的自动图像配准处理光纤末端面的两个图像（一个带有处于参考位置的光纤，另一个带有旋转光纤），获得了旋转角度。旋转计算的精度为 0.01°。
