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

Author

Montalvo, J. ; Araújo, F.M. ; Ferreira, L.A. ; Vázquez, C. ; Baptista, J.M.

Author_Institution

Univ. Carlos III de Madrid, Madrid

Volume

20

Issue

1

fYear

2008

Firstpage

45

Lastpage

47

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.

Keywords

electro-optical filters; fibre optic sensors; wavelength division multiplexing; electrical FIR filter; modulation frequency; optical coefficients; radio-frequency finite impulse reponse electrooptical configuration; reception stage; self-referencing WDM intensity sensors; self-referencing optical wavelength-division-multiplexed intensity sensors; Coils; Delay; Electrooptic devices; Finite impulse response filter; Optical fiber sensors; Optical filters; Optical modulation; Optical sensors; Radio frequency; Wavelength division multiplexing; Fiber Bragg gratings (FBGs); fiber-optic sensors; finite impulse response (FIR); optical filters; self-reference; wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.911511

Filename

4402984