EXPERIMENT ON FIBER BRAGG GRATING STRAIN SENSOR FOR CRYOGENIC ENVIRONMENT

Experiments on fiber-Bragg Grating Strain Sensor at liquid nitrogen temperature are presented. Based on the principle of the Fiber Bragg Grating Sensor the fiber-Bragg static transmission property was tested at liquid nitrogen temperature. The calibration of the fiber-Bragg grating strain sensor is given. The λ-e curve was established.