Montalvo García, JulioAraujo, F.M.Ferreira, L.A.Vázquez García, María CarmenBaptista, José Manuel2009-11-062009-11-062008-01-01IEEE Photonics Technology Letters, 2008, vol. 20, n. 1, p. 45-471041-1135http://hdl.handle.net/10016/5666In this letter, a novel radio-frequency finite impulse reponse (FIR) electrooptical configuration for self-referencing optical wavelength-division-multiplexed intensity sensors is reported. By employing the proposed low-cost electronic FIR filter at the reception stage, the use of a 14-km fiber delay coil is avoided for a 2-kHz modulation frequency, preserving sensitivity and self-reference. The technique is analyzed following the Z-transform formalism and measurements validating the theoretical model are reported.application/pdfeng© IEEEFiber Bragg gratings (FBGs)Fiber-optic sensorsFinite impulse response (FIR)Optical filtersSelf-referenceWavelength-division multiplexing (WDM)research articleElectrónica10.1109/LPT.2007.911511open access