Miniaturization of Bragg-multiplexed membrane transducers

Holmes, C., Carpenter, Lewis G., 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).


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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 sensitivtiy 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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1088/0960-1317/22/2/025017
ISSNs: 0960-1317 (print)
Related URLs:
Subjects: Q Science > QC Physics
Organisations: Optoelectronics Research Centre
ePrint ID: 301216
Date :
Date Event
25 January 2012Published
Date Deposited: 29 Feb 2012 14:40
Last Modified: 17 Apr 2017 17:30
Further Information:Google Scholar

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