Квазираспределенный оптоволоконный датчик с использованием технологии спектрального мультиплексирования

Abstract

The quasidistributed fiber-optic system using wavelength division multiplexing technology is developed. The sensing element is a segment of a multimode silica fiber coated with metal, separated spectrally selective elements, which are mainly offered to use dichroic mirrors. These studies determined: number of measuring sections (8), the maximal measured temperature (500°C), the measurement error (±0,2°C), and the optimum beginning time measurement after starting circulation (15 min), and counting time of the frequency meter (1 s).