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Miniaturization of Bragg-multiplexed membrane transducers

Holmes, C., Carpenter, Lewis, Gates, J.C. and Smith, P.G.R. (2012) Miniaturization of Bragg-multiplexed membrane transducers Journal of Micromechanics and Microengineering, 22, (2), p. 25017. (doi:10.1088/0960-1317/22/2/025017).

Record type: Article


This paper reports the miniaturization of Bragg-multiplexed pressure sensing membranes for integrated photonic chips. The analysis compares a novel Fabry-Pérot Bragg grating (FPBG) design that integrally spans a thin (54 µm) silica membrane to a recently reported single Bragg grating (BG) design that resides within the membrane. Unlike the single BG, the FPBG maintains spectral integrity as the dimensions of the membrane become sub-millimetre. In addition it is shown that the FPBG structure can also be used for inherent temperature referencing, having a Bragg thermal sensitivity of 13.5 pm °C-1, which can be decoupled from pressure effects. For the reported sub-millimetre membrane, pressure resolution was enhanced by a factor of three and spectral bandwidth reduced by over five-fold.

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Published date: 25 January 2012
Organisations: Optoelectronics Research Centre


Local EPrints ID: 301216
ISSN: 0960-1317
PURE UUID: af9703ea-77b5-444c-8132-3e29241142e7
ORCID for J.C. Gates: ORCID iD

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Date deposited: 29 Feb 2012 14:40
Last modified: 21 Sep 2017 16:32

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Author: C. Holmes
Author: Lewis Carpenter
Author: J.C. Gates ORCID iD
Author: P.G.R. Smith

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