The invention discloses a distributed
optical fiber sensor high-temperature dynamic calibration
system and method.The calibration
system comprises a high-temperature
tube furnace, a temperature demodulator, a DTS Raman
optical fiber demodulator and a computer, a
thermocouple and a multimode
optical fiber sensor are placed in the high-temperature
tube furnace, the
thermocouple is connected with the temperature demodulator, and the temperature demodulator is connected with the DTS Raman optical
fiber demodulator; the multimode optical
fiber sensor is connected with the DTS Raman optical
fiber demodulator; the temperature demodulator and the DTS Raman optical fiber demodulator are connected with the computer; the multi-mode optical fiber sensors penetrate through the high-temperature
tube furnace in a reciprocating mode in an S-shaped mode, the turning positions of the multi-mode optical fiber sensors are arranged outside the high-temperature tube furnace, at least four sections of the multi-mode optical fiber sensors are arranged in the high-temperature tube furnace, and the
mechanical tension state of each section of the multi-mode optical fiber sensors in the high-temperature tube furnace is zero; and a
thermocouple is correspondingly arranged on one side of each section of multimode optical
fiber sensor in the high-temperature tube furnace.