DEMODULATION SYSTEM FOR FBG SENSORS USING LINEARLY ARRAYED PHOTODETECTORS WITH OPTICAL DISPERSION DEVICES

PURPOSE: A system for demodulating FBG sensors using spectroscope and linearly arrayed photodetectors is provided to enable the wavelength of reflective light to be accurately measured at a time by making reflective light from the FBG sensor as spectrum using the spectroscope and by projecting the s...

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Bibliographic Details
Main Authors BANG, HYUNG JOON, JANG, MOON SUK
Format Patent
LanguageEnglish
Korean
Published 28.04.2011
Subjects
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
RADIATION PYROMETRY
TESTING
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Summary:PURPOSE: A system for demodulating FBG sensors using spectroscope and linearly arrayed photodetectors is provided to enable the wavelength of reflective light to be accurately measured at a time by making reflective light from the FBG sensor as spectrum using the spectroscope and by projecting the spectrum to the linearly arrayed photodetectors. CONSTITUTION: A system for demodulating FBG sensors using spectroscope and linearly arrayed photodetectors comprises a light source(110), a spectroscope(120), linearly arrayed photodetectors(130) and an analyzer(140). The light source generates and sends white light or broadband light to the FBG sensor(200). The spectroscope receives and disperses the reflective light by wavelength. The reflective light enters from the light source to the FBG sensor and then is reflected. The linearly arrayed photodetectors detect the dispersed light. The analyzer is connected to the linearly arrayed photodetectors. The analyzer processes the signal generated from the linearly arrayed photodetectors.
Bibliography:Application Number: KR20090100540