Fiber Bragg grating characterization using factorial design

Yazd Nazila Safari; Kinet Damien; Caucheteur Christophe; Megret Patrice

摘要

The design of the experiment is a scientific approach that provides the maximum amount of information with the minimum number of experiments. It is applicable in scientific and industrial research. We represent a three-variable two-level factorial design to assess fiber Bragg grating properties under simultaneous temperature, humidity, and strain stimuli. Three uniform gratings were inscribed in a single-mode standard optical fiber using the interferometric technique. Two gratings were recoated, one with acrylate and another with a layer of polyimide, while the third grating remained bare. With only eight measuring points, the sensitivities of temperature, strain, and humidity were computed. Moreover, with this technique, the cross-sensitivities between temperature and strain, temperature and humidity, humidity and strain, and between all three factors could also be quantified. We have proven that the results of this design are comparable with those of the classic method. For all gratings, the temperature and strain sensitivities were obtained in the order of 10 pm/degrees C and 1.1 pm/mu epsilon, respectively. The humidity sensitivity of the polyimide recoated grating was estimated to be in the order of 4.47 pm/% RH at room temperature. (C) 2019 Optical Society of America

机译：实验的设计是一种科学的方法，提供最大的实验数量的最大信息量。它适用于科学和工业研究。我们代表了三种两级阶乘设计，以评估同时温度，湿度和应变刺激的光纤布拉格光栅属性。使用干涉技术，在单模标准光纤中刻有三个均匀的光栅。重新涂覆两种光栅，用丙烯酸酯，另一种聚酰亚胺，而第三个光栅保持裸露。只有八个测量点，计算温度，应变和湿度的敏感性。此外，通过这种技术，还可以量化温度和湿度，温度和湿度，湿度和菌株之间的交叉敏感性，以及所有三个因子之间也可以量化。我们已经证明，这种设计的结果与经典方法的结果相当。对于所有光栅，分别为10μm/℃和1.1μm/ mm epsilon的10 PM /℃和1.1μm/ mm epsilon获得温度和菌株敏感性。估计聚酰亚胺重复光栅的湿度敏感性在室温下为4.47 /％RH的顺序。（c）2019年光学学会

Fiber Bragg grating characterization using factorial design

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