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Optica Publishing Group
  • Journal of the Optical Society of Korea
  • Vol. 12,
  • Issue 3,
  • pp. 152-156
  • (2008)

Fiber-Optic Temperature Sensor Based on Single Mode Fused Fiber Coupler

Open Access Open Access

Abstract

This paper reports a fiber-optic temperature sensor using a single mode fused fiber coupler incorporating a thermo-optic external medium. The spectral transmission was altered by changing the refractive index of the external thermo-optic medium. A theoretical and experimental investigation was carried out with the aim of achieving high sensitivity. The measured sensitivity for the environmental temperature was as high as -1.5 <TEX>$nm/^{\circ}C$</TEX>.

© 2008 Optical Society of Korea

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