An arrayed waveguide grating based multiplexer and interrogator for Fabry-Perot sensors

A.J. Willshire; P. Niewczas; J.R. McDonald

doi:10.1109/JSEN.2005.854484

An arrayed waveguide grating based multiplexer and interrogator for Fabry-Perot sensors

A.J. Willshire, P. Niewczas, J.R. McDonald

Electronic And Electrical Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

In this paper, we propose an interrogation system capable of multiplexing four identical Fabry-Perot (FP) interferometric sensors using two wavelength-division multiplexing devices. One is a 40-channel DWDM channel monitor, the other a 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 analyzed 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 predicted that this system would be capable of interrogating four EFPI strain sensors simultaneously at frequencies greater than 5 kHz with a resolution of approximately 2 /spl mu//spl epsiv/ and a range of 3000 /spl mu//spl epsiv/.

Original language	English
Pages (from-to)	964-969
Number of pages	5
Journal	IEEE Sensors Journal
Volume	5
Issue number	5
DOIs	https://doi.org/10.1109/JSEN.2005.854484
Publication status	Published - 2005

Keywords

Fabry-Perot interferometers
arrayed waveguide gratings distributed sensors
multiplexing
optical sensors
electrical systems

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10.1109/JSEN.2005.854484

Cite this

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title = "An arrayed waveguide grating based multiplexer and interrogator for Fabry-Perot sensors",

abstract = "In this paper, we propose an interrogation system capable of multiplexing four identical Fabry-Perot (FP) interferometric sensors using two wavelength-division multiplexing devices. One is a 40-channel DWDM channel monitor, the other a 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 analyzed 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 predicted that this system would be capable of interrogating four EFPI strain sensors simultaneously at frequencies greater than 5 kHz with a resolution of approximately 2 /spl mu//spl epsiv/ and a range of 3000 /spl mu//spl epsiv/.",

keywords = "Fabry-Perot interferometers, arrayed waveguide gratings distributed sensors, multiplexing, optical sensors, electrical systems",

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T1 - An arrayed waveguide grating based multiplexer and interrogator for Fabry-Perot sensors

AU - Willshire, A.J.

AU - Niewczas, P.

AU - McDonald, J.R.

PY - 2005

Y1 - 2005

N2 - In this paper, we propose an interrogation system capable of multiplexing four identical Fabry-Perot (FP) interferometric sensors using two wavelength-division multiplexing devices. One is a 40-channel DWDM channel monitor, the other a 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 analyzed 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 predicted that this system would be capable of interrogating four EFPI strain sensors simultaneously at frequencies greater than 5 kHz with a resolution of approximately 2 /spl mu//spl epsiv/ and a range of 3000 /spl mu//spl epsiv/.

AB - In this paper, we propose an interrogation system capable of multiplexing four identical Fabry-Perot (FP) interferometric sensors using two wavelength-division multiplexing devices. One is a 40-channel DWDM channel monitor, the other a 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 analyzed 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 predicted that this system would be capable of interrogating four EFPI strain sensors simultaneously at frequencies greater than 5 kHz with a resolution of approximately 2 /spl mu//spl epsiv/ and a range of 3000 /spl mu//spl epsiv/.

KW - Fabry-Perot interferometers

KW - arrayed waveguide gratings distributed sensors

KW - multiplexing

KW - optical sensors

KW - electrical systems

UR - http://dx.doi.org/10.1109/JSEN.2005.854484

U2 - 10.1109/JSEN.2005.854484

DO - 10.1109/JSEN.2005.854484

M3 - Article

SN - 1530-437X

VL - 5

SP - 964

EP - 969

JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

IS - 5

ER -

An arrayed waveguide grating based multiplexer and interrogator for Fabry-Perot sensors

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Keywords

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