In many cases, temperature control of extended objects is performed by the measurement of temperature of optical fiber (OF) laid along or inside of these objects. The optical time domain reflectometer, which determines the temperature distribution along OF by the measurement of characteristics of Raman and Rayleigh, is developed. Processing of scattering signals takes into account the wavelength of OF attenuation and availability of OF junctions, which fiber opti communication line (FOCL) consists of. The Raman OTDRs were used for temperature control of optical power ground wire (OPGW) during ice melting..


Разработка: студия Green Art