FIBRE-INTERFERENCE SYSTEM OF PRESSURE MEASUREMENT Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: fibre-interference system of pressure measurement includes radiation source, light guides, sensitive element, directional coupler, recording unit. It is inserted with amplitude-spectral optical radiation modulator connected to radiation source and composed of control device and modulators of spectrum and amplitude connected in series which output is connected to directional coupler. One output of directional coupler is connected to recording unit and the other one to sensitive element through light guide. Sensitive element is laminated structure of optically transparent materials forming holographic filter. Recording unit has photodetector and frequency meter connected in series. EFFECT: diminished dimensions of system increased accuracy and speed of measurements. 5 dwg