FIBER-OPTICAL DETECTOR Russian patent published in 1997 - IPC

FIELD: transducers of small-scale variations in pressure, speed of flow of liquids and gases, level meters. SUBSTANCE: device has reference and information reflecting surfaces in opposite to which ends of reference and information light guides are located. Said light guides are connected to non-symmetry arms of V-shaped fiber-optical dividers which symmetrical arms are connected to light sources and photodetectors which convert optical signals to electric ones. Latter signals are processed by device. Said reference and information planes are designed as two reflecting surfaces which are rigidly attached to monitored object and are oriented in opposite sides in parallel to each other. Ends of reference and information light guides are located at equal distance from reference and information surfaces respectively and are directed to opposite sides. Output electric signal is generated by means of relative analog subtraction of electric signals from reference and information channels. EFFECT: increased functional capabilities. 3 dwg