Interrogation of a dual-fibre-Bragg-grating sensor using an arrayed waveguide grating

D.C. Robertson; P. Niewczas; J.R. McDonald

doi:10.1109/TIM.2007.908156

Interrogation of a dual-fibre-Bragg-grating sensor using an arrayed waveguide grating

D.C. Robertson, P. Niewczas, J.R. McDonald

Electronic And Electrical Engineering

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

18 Citations (Scopus)

Abstract

In this paper, we consider the possibility of improving the accuracy of a solid-state fiber Bragg grating (FBG) interrogation system by using two, instead of one, FBGs inscribed on the same location of the fiber, with a small difference in the peak wavelength that each reflects. Signal processing can be applied to the outputs of the photodetectors that are connected to an arrayed waveguide grating to provide a linear response from the sensor. We demonstrate here that this method reduces errors when compared to the setup employing a single FBG with the same bandwidth as the dual sensor.

Original language	English
Pages (from-to)	2641-2645
Number of pages	5
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	56
Issue number	6
DOIs	https://doi.org/10.1109/TIM.2007.908156
Publication status	Published - Dec 2007

Keywords

arrayed waveguide gratings
fiber Bragg gratings
sensor interrogation
strain sensors

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10.1109/TIM.2007.908156

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abstract = "In this paper, we consider the possibility of improving the accuracy of a solid-state fiber Bragg grating (FBG) interrogation system by using two, instead of one, FBGs inscribed on the same location of the fiber, with a small difference in the peak wavelength that each reflects. Signal processing can be applied to the outputs of the photodetectors that are connected to an arrayed waveguide grating to provide a linear response from the sensor. We demonstrate here that this method reduces errors when compared to the setup employing a single FBG with the same bandwidth as the dual sensor.",

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AB - In this paper, we consider the possibility of improving the accuracy of a solid-state fiber Bragg grating (FBG) interrogation system by using two, instead of one, FBGs inscribed on the same location of the fiber, with a small difference in the peak wavelength that each reflects. Signal processing can be applied to the outputs of the photodetectors that are connected to an arrayed waveguide grating to provide a linear response from the sensor. We demonstrate here that this method reduces errors when compared to the setup employing a single FBG with the same bandwidth as the dual sensor.

KW - arrayed waveguide gratings

KW - fiber Bragg gratings

KW - sensor interrogation

KW - strain sensors

U2 - 10.1109/TIM.2007.908156

DO - 10.1109/TIM.2007.908156

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ER -

Interrogation of a dual-fibre-Bragg-grating sensor using an arrayed waveguide grating

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Keywords

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