Journal
JOURNAL OF THE OPTICAL SOCIETY OF KOREA
Volume 12, Issue 3, Pages 152-156Publisher
OPTICAL SOC KOREA
DOI: 10.3807/JOSK.2008.12.3.152
Keywords
fused fiber coupler; fiber-optic temperature sensor; thermo-optic effect; spectral transmission
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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 nm/degrees C.
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