An optical fiber temperature sensor based on Mach–Zehnder interferometer and thermo-optic effect of the liquid crystal (LC) in ring laser (FRL) system is proposed experimentally demonstrated. The LC infiltrated into core hollow fiber, resonant wavelength more sensitive to variation due interaction between incident light cavity infiltrating with high thermal coefficient. Meanwhile, FRL was furth...

A model for estimating the total eddy current losses in ring ferrite cores is proposed, which based on a microstructure of electrical parameters material (conductivity and permittivity) solution wave equations core. The presented model, combined with state-of-the-art estimation hysteresis losses, gives good agreement core loss measurements, over wide range frequencies (10–700 kHz).