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Spectral processor and ASE source aid fiber sensing

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Spectral processor and ASE source aid fiber sensing

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  • Author: Hector Lara, Jason Eichenholz
Many applications for fiber sensing use multiple fiber Bragg gratings (FBGs) arranged in series. This arrangement allows a single terminated fiber or fiber loop to monitor several locations in an industrial plant, process line, or engineered structure. The most common way of providing discrimination between the different FBGs is to use FBGs with slightly different wavelengths. Several schemes have been proposed to separate these signals in the wavelength domain, using a tunable laser, an optical spectrum analyzer, or multiple filters.

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