A structure-modulated ultralong-period microfiber grating (SULPMG) was successfully designed for simultaneous measurement of microdisplacement and temperature. The SULPMG was fabricated based on the standard single-mode fiber using the arc discharge method followed by hydrogen-oxygen flame drawing technology. The resonance wavelength of the two notches shifts toward a shorter range when the microdisplacement varies from 0 $\mu \text{m}$ to 65 $\mu \text{m}$ . The results show that the wavelength sensitivity could reach a maximum value of −288.9 pm/ $\mu \text{m}$ with a total depth change of 2.95 dB and a high resolution of 69 nm. The temperature sensitivity of the proposed sensor could reach approximately −26.4 pm/°C over an ambient temperature range of 22–90 °C. The proposed sensor can be expected to be applied in fields pertaining to microfabrication and many industrial applications.

中文翻译：

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用于同时测量位移和温度的超长周期微纤维光栅

结构调制的超长周期微纤维光栅 (SULPMG) 被成功设计用于同时测量微位移和温度。SULPMG 是基于标准单模光纤使用电弧放电方法和氢氧火焰拉伸技术制造的。当微位移从 0 变化时，两个凹口的共振波长向更短的范围移动 $\mu \text{m}$ 到 65 $\mu \text{m}$ . 结果表明，波长灵敏度最高可达−288.9 pm/ $\mu \text{m}$ 总深度变化为 2.95 dB，高分辨率为 69 nm。在 22–90 °C 的环境温度范围内，所提出的传感器的温度灵敏度可以达到大约 -26.4 pm/°C。所提出的传感器有望应用于与​​微制造和许多工业应用有关的领域。