期刊
OPTICAL FIBER TECHNOLOGY
卷 75, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2022.103202
关键词
Fiber Bragg grating; High temperature; Gas pressure sensor
A fiber Bragg grating (FBG) based sensor is proposed for measuring gas pressure under extreme temperature conditions. The FBG sensors show low sensitivity to pressure changes at room temperature, but higher sensitivity at higher temperatures. An interesting approach based on a 2 x 2 characteristics matrix is demonstrated for discriminative measurement of pressure and temperature.
A fiber Bragg grating (FBG) based sensor is proposed for the measurement of gas pressure under extreme tem-perature condition. Two FBG sensors of different cladding diameters are encapsulated and sealed in a fine hollow-core silica tube (HCST) by using a high temperature resistant ceramic adhesive (HTA). In the observation, the FBG sensors are practically insensitive to pressure change at room temperature and their pressure sensitivities are negatively higher at higher temperature. This can be attributed to the temperature dependence of the HTA's Young's modulus. The findings show that the sensors have a maximum pressure and temperature sensitivity of-0.993 nm/MPa and 13.8 pm/degrees C for a pressure range of 0-1 MPa over the temperature range of 17-400 degrees C. Despite the high pressure-temperature cross sensitivities, an interesting approach based on a 2 x 2 character-istics matrix is demonstrated for discriminative measurement of pressure and temperature
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据