Department of Electrical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
Opt Lett. 2011 Sep 15;36(18):3542-4. doi: 10.1364/OL.36.003542.
We present thermally regenerated fiber Bragg gratings in air-hole microstructured fibers for high-temperature, hydrostatic pressure measurements. High-temperature stable gratings were regenerated during an 800 °C annealing process from hydrogen-loaded Type I seed gratings. The wavelength shifts and separation of grating peaks were studied as functions of external hydrostatic pressure from 15 to 2400 psi, and temperature from 24 °C to 800 °C. This Letter demonstrates a multiplexible pressure and temperature sensor technology for high-temperature environments using a single optical fiber feedthrough.
我们在空气孔微结构光纤中展示了热再生光纤布拉格光栅，用于高温、静水压力测量。在 800°C 的退火过程中，从载氢的 I 型种子光栅中再生出高温稳定的光栅。研究了光栅峰值的波长位移和分离随外部静压从 15 到 2400 psi 以及温度从 24°C 到 800°C 的变化。本信展示了一种使用单根光纤贯穿件的高温环境下的可复用压力和温度传感器技术。
