Each member of a Fabry-Perot sensor family utilizes the same electro-optic hardware support system. This system consists of a broadband light source coupled into a fiber which transmits this broadband spectrum to the remote sensor element in a hostile, aircraft environment. The all-optical sensor element is a variable-gap Fabry-Perot cavity which modulates the reflected spectrum according to the gap dimension. The reflected spectrum is fiber-transmitted back to a microprocessor-based, color demodulation system. This color demodulation is accomplished by blazed grating dispersion over a charge-coupled-device (CCD). The microprocessor analyses the spectral data and - depending upon sensor element and associated software - converts it to measured parameter with typical accuracies of 1 %.
Fiber optic sensor family utilizing Fabry Perot resonators for high performance aircraft system applications
Faseroptische Sensorfamilie mit Fabry-Perot-Resonatoren für Anwendung in leistungsfähigen Luftfahrtsystemen
1988
3 Seiten, 6 Bilder
Conference paper
English
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