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), 025017. (doi:10.1088/0960-1317/22/2/025017).
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Description/Abstract
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 |
|---|---|
| ISSNs: | 0960-1317 (print) 1361-6439 (electronic) |
| Related URLs: | |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Physical and Applied Science > Optoelectronics Research Centre |
| Item ID: | 301216 |
| Date Deposited: | 29 Feb 2012 14:40 |
| Last Modified: | 02 Mar 2012 12:38 |
| Contributors: | Holmes, C. (Author) Carpenter, Lewis G. (Author) Gates, J C (Author) Smith, P G R (Author) |
| Date: | 25 January 2012 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/301216 |
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