Proceedings PaperDevelopments Of Intensity, Frequency And Wavelength-Modulated Optical Fibre Sensors Using Incoherent Light And Multimode Fibres
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Optical fibre sensors are being developed for industrial and consumer markets and may be intrinsically safe, free from interference and cheap to install. First generation devices for measurement of key quantities seem likely to use multimode technology and be 'point' temperature/displacement/force types. Three main design approaches are described with examples: intensity-modulation with referencing, colour modulation with simple wavelength detection, and rate-modulation using hybrid techniques.