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Simultaneous pressure and temperature measurement with polymer-coated fibre Bragg grating

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5 Author(s)
Yunqi Liu ; Inst. of Modern Opt., Nankai Univ., Tianjin, China ; Zhuanyun Guo ; Ying Zhang ; Kin Seng Chiang
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It is shown, both theoretically and experimentally, that the pressure and temperature sensitivities of a fibre Bragg grating (FBG) can be increased by as much as 30 and 8 times, respectively, by coating the FBC with a polymer. A novel technique is then presented for coating an FBG with polymers so that a single FBG can be used for simultaneous measurement of pressure and temperature with good sensitivities

Published in:

Electronics Letters  (Volume:36 ,  Issue: 6 )