Henderson, P.J. and Rao, Y.J. and Jackson, D.A. and Zhang, L.S. and Bennion, I. (1998) Simultaneous multi-parameter monitoring using a serial fibre-Fabry-Perot array with low-coherence and wavelength-domain detection. Measurement Science & Technology, 9 (11). pp. 1837-1839. ISSN 0957-0233.
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A sensor multiplexing scheme for the simultaneous monitoring of dynamic strain and temperature is presented. The scheme combines low-coherence and wavelength-division signal processing with a serial array of fibre-fabry-Perot (FFP) interferometric sensors defined by in-fibre grating mirrors of matched Bragg wavelength. Heterodyne measurements of signal phase from a 39 cm long FFP interferometer result in a dynamic strain resolution of about 0.14 ns Hz(-1/2) at acoustic frequencies. Temperature measurements via the induced changes in Bragg wavelength have a sensitivity of about 8 pm degrees C-1. The cross-talk between the strain and temperature channels is within the system noise.
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General) > TA166 Instrumentation|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||R.F. Xu|
|Date Deposited:||15 Apr 2009 11:09|
|Last Modified:||15 Apr 2009 11:09|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/17807 (The current URI for this page, for reference purposes)|
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