.Study of a high-temperature and high-pressure FBG sensor with Al2O3 thin-wall tube substrate[J].Optoelectronics Letters,2008,4(4):260-263 Study of a high-temperature and high-pressure FBG sensor with Al2O3 thin-wall tube substrate 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 °C, and has a pressure sensitivity of 0.0426 nm/MPa and a temperature sensitivity of 0.0112 nm /°C This work has been supported by the National “863” Project of China (No.2002AA313150). Hits: 3437 Download times: 202 View Full Text    Download reader