The principle of MST optical innovative thermometer is: when an object is heated, it continuously radiates characteristic waves to space or surrounding media. The relationship between the peak wavelength of characteristic wave and temperature can be obtained from Wien's law, I = 0.2897 / (273 ± ℃). When the temperature rises, the peak wavelength moves to the short wave direction, such as 10.61mm at 0 ℃, 2.28mm at 1000 ℃, and 1.27m at 2000 ℃ m. The characteristic wave is transmitted from one end of the fiber to the other end, because the other end of the fiber is connected with a detector, namely diffraction grating. From the grating come the fringes of order 0, 1, 2 In this way, the characteristic wave corresponding to the temperature can be detected conveniently. Then connect the photodetector, output the frequency signal with the temperature change, that is to get the digital output temperature signal, connect the secondary instrument or computer to display the measured temperature value.
