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Multiplexing capabilities of a solid state interrogator for spectrally encoded sensors

Willshire, A.J. and Niewczas, P. and McDonald, J.R. (2004) Multiplexing capabilities of a solid state interrogator for spectrally encoded sensors. In: IEEE Sensors 2003 Proceedings. IEEE Computer Society, pp. 1016-1020. ISBN 0-7803-8133-5

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Abstract

In this paper we propose a solid state interrogation system capable of multiplexing four spectrally encoded sensors, e.g., FBGs or EFPIs, using two Wavelength Division Multiplexing devices. One is a 40 channel DWDM channel monitor, the other a proposed four channel CWDM device. The sensors are connected to the output channels of the CWDM device in order to assign a portion of the spectrum to each sensor. The reflected spectra are then analysed using the DWDM channel monitor. By monitoring the power incident on each of the DWDM channels, the four sensor reflection spectra can be reconstructed in software and information relating to the measurand obtained Based on software simulations and previous laboratory experiments with single sensors, it is believed that this system would be capable of interrogating four FBG or EFPI sensors simultaneously at frequencies of greater than 5kHz with linear errors of less than 0.08%.

Item type: Book Section
ID code: 3559
Keywords: sensors, multiplexing, wavelength, optics, optical fibres, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Professional Services > Corporate Services Directorate
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 13 Jun 2007
    Last modified: 17 Jul 2013 12:59
    URI: http://strathprints.strath.ac.uk/id/eprint/3559

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