Publication:
Electrical FIR Filter With Optical Coefficients for Self-Referencing WDM Intensity Sensors

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2008-01-01
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IEEE
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Abstract
In 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.
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Fiber Bragg gratings (FBGs), Fiber-optic sensors, Finite impulse response (FIR), Optical filters, Self-reference, Wavelength-division multiplexing (WDM)
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IEEE Photonics Technology Letters, 2008, vol. 20, n. 1, p. 45-47