A fibre-optic thermometric sensor based on the thermo-optic effect of titanium dioxide coatings |
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| Authors: | MNaci Inci JS Barton JDC Jones |
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| Institution: | aMNI is at Bogazici University, Department of Physics, 80815 Bebek, Istanbul, Turkey;bJSB and JDCJ are in the Optoelectronics and Laser Engineering Division, Department of Physics, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, UK |
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| Abstract: | An experimental determination of the thermo-optic effect of titanium dioxide is described in which the test element is a thin film deposited onto the end face of an optical fibre. The film acts as an etalon. The reflectivity of titanium dioxide films was measured as a function of temperature experimentally over the range 20 °C to 500 °C, and modelled theoretically to yield a value of the thermo-optic coefficient of − 1.49 × 10−4 K−1. The use of the data in the design of a thin-film optical fibre temperature sensor is described. |
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| Keywords: | titanium fibre-optics sensors |
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