.Study of a high-temperature and high-pressure FBG sensor with Al2O3 thin-wall tube substrate[J].Optoelectronics Letters,2008,4(4): Study of a high-temperature and high-pressure FBG sensor with Al2O3 thin-wall tube substrate Optical Fiber Sensing Laboratory, Xi＇an Petroleum University, Xi ＇an 710065, China Abstract:       A fiber Bragg grating (FBG) high-temperature and high pressure sensor has been designed and fabricated by using the Al2O3 thin-wall tube as a substrate. The test results show that the sensor can withstand a pressure range of 0-45 MPa and a temperature range of-10-300℃, and has a pressure sensitivity of 0.0426 nm/MPa and a temperature sensitivity of 0.0112nm/℃ Hits: 3513 Download times: 190 View Full Text    Download reader