Simultaneous multi-parameter monitoring using a serial fibre-Fabry-Perot array with low-coherence and wavelength-domain detection

Henderson, Philip J. and Rao, Yun Jiang and Jackson, David A. and Zhang, Leishi and Bennion, Ian (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. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1088/0957-0233/9/11/007

Abstract

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.

Item Type: Article
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: 25 Jun 2014 14:51
Resource URI: https://kar.kent.ac.uk/id/eprint/17807 (The current URI for this page, for reference purposes)
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