| 摘要 |
PURPOSE: A temperature measuring device using optical fiber is provided to detect a measuring result from a plurality of optical grating sensors in a short time. CONSTITUTION: A temperature measuring device using optical fiber comprises a light source(101), a fiber optic line(600), a sensing optical grating sensor(SG) and a temperature guard part. The light source irradiates the light of the broadband having a plurality of frequency ranges. The fiber optic line is installed in the measured object and receives the light from the light source. The sensing optical grating sensor is formed in the fiber optic line and reflects the light of the specific wave from the light of the light source. The temperature guard part analyzes the wavelength of the light reflected to from the sensing optical grating sensor. The temperature guard part watches the temperature change of the specific site of the measured object in which the optical element locates. |
