FBG type temperature sensor for high-stability generator

The invention discloses an FBG type temperature sensor for a high-stability generator. The FBG type temperature sensor comprises a first FBG; a second fiber grating; the first heat conduction pipe head is provided with a first temperature sensing slot; the second heat conduction pipe head is provided with a second temperature sensing slot; one end of the first heat conduction pipe head and one end of the second heat conduction pipe head are separately arranged at one end of the mounting seat at intervals; the first fiber bragg grating is contained in the first temperature sensing slot, one end of the first fiber bragg grating is arranged outside the mounting base in a penetrating mode, and the second fiber bragg grating is contained in the second temperature sensing slot. Through the mode, the generator coolant temperature sensor disclosed by the invention is good in stability and high in measurement precision, in addition, two independent temperature measurement sensing elements can be arranged in the sensor