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Vol. 111, Issue 12, December 2009, pp. 125-131




Multimode D-type Optical Fiber Sensor Based on ATR Effect in Temperature Detection


*Ming-Hung Chiu, Po-Chin Chiu, Liu-Yi Hsien, Wei-Ching Chuang
and Fuh-Shyang Juang

Department of Electro-Optical Engineering, National Formosa University,

No.64 Wunhua Road, Huwei Yunlin 632, Taiwan

*Tel.: +886-5-6315666, fax: +886-5-6329257

E-mail: mhchiu@nfu.edu.tw



Received: 21 October 2009   /Accepted: 22 December 2009   /Published: 30 December 2009


Abstract: An application of a multimode D-type optical fiber sensor (OFS) in temperature measurement is proposed. The sensor is based on the attenuated total reflection (ATR) effect and acts as a probe to sense a liquid or gas temperature in real-time. We use the optical spectrum method combined with the minimum value of relative power ratio technique to analyze and record the temperature. The temperature resolution is 0.01 C in the measurement range of 24~75 C. The proposed system offers the advantages of simplicity, sensitivity, and remote testing.


Keywords: Attenuated total reflection (ATR), Optical fiber sensor (OFS), Temperature measurement


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