Temperature sensor based on a fibre-optic differential delay RF filter

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Temperature sensor based on a fibre-optic differential delay RF filter

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© The Institution of Electrical Engineers
Published

The letter describes a temperature sensor which employs an intensity-modulation filtering technique to measure the thermally induced change in delay in a length of optical fibre wound on an aluminium cylinder. The sensor response was measured over a temperature range of 10–40°C, and is in good agreement with theory.

Inspec keywords: temperature measurement; fibre optic sensors

Other keywords: 10 to 40 degC; RF filter; fibre-optic differential delay; sensor response; intensity-modulation filtering technique; temperature sensor; thermally induced change

Subjects: Fibre optic sensors; fibre gyros; Thermal variables measurement; Fibre optic sensors

References

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      • M. Tur , B.Y. Kim , J.L. Brooks , H.J. Shaw . Accurate loop length determination in fibre-optic sensors and signal processors. Electron. Lett. , 778 - 780
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      • A.D. Kersey , F. Bucholtz , K. Sinansky , A. Dandridge . Interferometric sensors for dc measurands—a new class of fiber sensors. Proc. SPIE , 198 - 202
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      • C.A. Wade , J.P. Dakin , J. Croft , J. Wright . Optical fibre displacement sensor based on electrical subcarrier interferometry using a Mach-Zehnder configuration. Proc. SPIE , 223 - 229
    4. 4)
      • K. Böhm , K. Petermann , E. Weidel . Performance of Lyot depolarizers with birefringent single-mode fibers. J. Lightwave Technol. , 71 - 74
    5. 5)
      • N. Lagakos , I.A. Bucaro , J. Jarzynski . Temperatureinduced optical phase shifts in fibers. Appl. Opt. , 2305 - 2308
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