Enhanced FBG strain sensing multiplexing capacity using combination of intensity and wavelength dual-coding technique

Authors
Zhang, L Liu, Y Williams, JAR Bennion, I
Citation
L. Zhang et al., Enhanced FBG strain sensing multiplexing capacity using combination of intensity and wavelength dual-coding technique, IEEE PHOTON, 11(12), 1999, pp. 1638-1640
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE PHOTONICS TECHNOLOGY LETTERS
ISSN journal
10411135 → ACNP
Volume
11
Issue
12
Year of publication
1999
Pages
1638 - 1640
Database
ISI
SICI code
1041-1135(199912)11:12<1638:EFSSMC>2.0.ZU;2-X
Abstract
A novel concept for interrogating a fiber Bragg grating sensor array using intensity and wavelength dual-coded multiplexing (IWDM) is proposed and eva luated. In comparison with conventional wavelength-division-multiplexed sen sor systems, IWDM allows the number of sensing gratings in an array to be d oubled without sacrificing dynamic range and without additional cost or com plexity of interrogation. A practical strain sensing system based on IWDM a nd using specifically produced gratings with a dual-peaked spectral respons e has been demonstrated with 50-Hz interrogation rate and 1 mu epsilon reso lution.