Optical fiber sensors excel in environments with high electrical and magnetic interference. Key methods include blackbody radiation, luminescence, fiber Bragg gratings (FBGs), and interferometers. Blackbody methods measure 500-2040°C; FBGs can measure up to 320°C under optimal. Since the measuring chain is a functional combination of optical methods, optical fiber properties, and other photonic elements together with control electronic circuits, it is necessary to find a suitable compromise between the chosen measurement method, measuring range, accuracy, and resolution. One type of fibre optic temperature probe consists of a gallium. Thermocouple sensors made of precious metals are commonly used for contact temperature measurements thanks to their mature preparation process, ease of operation, wide temperature measurement range, and the capability for absolute measurements [14, 15, 16]. However, the thermocouple sensors have. Temperature measurement can be achieved through various methods, including: However, these traditional systems often suffer from limited immunity to electromagnetic interference and stray radiation, leading to inaccurate measurements. ▪ One of the main advantages of this technology is its iiiiintrinsic.
