A hybrid sensor, for temperature and strain discrimination, comprising a Fiber Bragg grating (FBG) and two Fabry-Pérot interferometers (FPIs) both fabricated by a femtosecond laser system is presented. The Vernier effect was used to magnify the sensitivity of one interferometer by, approximately, 95 times, reaching sensitivities of (1050 ± 20) pm/°C and (113 ± 2) pm/µε. In this way, cross-sensitivity issues could be overcome by simply using the matricial method to discriminate temperature and strain variations. The simple fabrication method allied to the customizable sensitivity of the hybrid sensor, allows the use of this type of devices in many industrial and research fields, in which high resolutions and production reliability are essential requirements.

提出了一种用于温度和应变识别的混合传感器，包括光纤布拉格光栅（FBG）和两个均由飞秒激光系统制造的法布里-珀罗干涉仪（FPI）。游标效应被用来将一个干涉仪的灵敏度放大大约95倍，达到（1050±20）pm /°C和（113±2）pm / µε的灵敏度。这样，通过简单地使用矩阵方法来区分温度和应变变化，就可以克服交叉敏感性问题。与混合传感器的可定制灵敏度相关联的简单制造方法允许在许多工业和研究领域中使用这种类型的设备，其中高分辨率和生产可靠性是必不可少的要求。