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利用空芯光纤和普通单模光纤通过切割和熔接制作出一种内嵌式微腔应变传感器,该传感器兼具传统本征型(IFPI)和非本征型(EFPI)法珀传感器的特点,温度交叉敏感性低且具有较高的机械强度,通过控制切割空芯光纤长度可制作出较短的腔长,从而具有较高的空间分辨率和快速的动态频率响应,在测量瞬时大功率冲击波引起的材料应变场合中有较大应用潜力。
Using hollow fiber and ordinary single-mode fiber, an embedded micro-cavity strain sensor is fabricated by cutting and welding. The sensor combines the characteristics of traditional intrinsic (IFPI) and non-intrinsic (EFPI) Low cross-sensitivity and high mechanical strength. By controlling the length of cut hollow fiber, a shorter cavity length can be manufactured, which has high spatial resolution and fast dynamic frequency response. When measuring instantaneous high-power shock wave The materials have great potential applications in the field of strain.