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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 16,
  • Issue 1,
  • pp. 54-
  • (1998)

A Network for Large Numbers of Interferometric Sensors and Fiber Bragg Gratings with High Resolution and Extended Range

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Abstract

We describe an active form of a frequency division matrix array network developed to support both interferometric sensors and fiber Bragg gratings to demodulate both quasistatic and periodic measurands. Novel telemetry allows an improved measurement range using a single source and uses a fundamental interferometric principle for self-calibration. High resolution is achieved through active but remote demodulation of passive sensors. A resolution of 0.019 nm with a measurement range of 62.8 \mum for an interferometric sensor and a strain resolution of 0.19 \mu\varepsilon with a measurement range of 6.28 m\varepsilon was obtained for fiber Bragg grating sensors.

[IEEE ]

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