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Sensors 2008, 8(3), 1872-1878; doi:10.3390/s8031872

High Sensitive Temperature Sensor Using a Liquid-core Optical Fiber with Small Refractive Index Difference Between Core and Cladding Materials

Department of Physics, the State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication Systems, Shanghai Jiao Tong University, 800, Dong Chuan Road, Shanghai, 200240, China
Author to whom correspondence should be addressed.
Received: 29 November 2007 / Accepted: 21 February 2008 / Published: 17 March 2008
(This article belongs to the Special Issue Optical Biosensors)
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An intensive temperature sensor based on a liquid-core optical fiber has been demonstrated for the measuring the temperature of the environment. The core of fiber is filled with a mixture of toluene and chloroform in order to make the refractive index of the liquid-core and the cladding of the fiber close. The experiment shows that a temperature sensitivity of about 5 dB/K and a tunable temperature range (from 20 oC to 60 oC) can be achieved. Based on the dielectric-clad liquid core fiber model, a simulation was carried out and the calculated results were in good accord with the experimental measurement. View Full-Text
Keywords: Temperature sensor; liquid-core fiber; sensitivity; mixture Temperature sensor; liquid-core fiber; sensitivity; mixture

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xu, Y.; Chen, X.; Zhu, Y. High Sensitive Temperature Sensor Using a Liquid-core Optical Fiber with Small Refractive Index Difference Between Core and Cladding Materials. Sensors 2008, 8, 1872-1878.

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