FIBRE-OPTIC SENSOR SYSTEM Russian patent published in 2011 - IPC G01D5/30 G01B9/02 

FIELD: physics.

SUBSTANCE: device has an optical radiation sensor, an optical fibre, a fibre-optic coupler, a Fabry-Perot sensor and optical radiation receivers. The system also includes a module for adjusting optical radiation wavelength, a loop for synchronising the measurement channel on wavelength, analogue-to-digital converters and a digital signal processor. The bandgap of the Fabry-Perot sensor is selected from the relationship where L₀ is the bandgap of the Fabry-Perot sensor; Δλ is the range for adjusting wavelength of radiation generated by the optical radiation source; λ_min is the minimum wavelength of radiation generated by the optical radiation source; X is the number of resonances of the reflection coefficient (transmission) of the Fabry-Perot sensor when adjusting wavelength of radiation generated by the optical radiation source on the interval λ_min' λ_min + Δλ.

EFFECT: broader functionalities owing to a wider range of measuring physical quantities and higher measurement accuracy of the fibre-optic sensor system.

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