Two dimensional optical fibre cantilever accelerometer

Jun Li, Jining Sun, M. M. Miliar, F. Z. Dong, R. R J Maier, D. P. Hand, W. N. MacPherson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Focused Ion Beam (FIB) machining has been demonstrated to be capable of fabricating nano and micro scale elements onto optical fibres. In this paper we exploit FIB to fabricate core aligned 45° mirrors at the end of multi-core fibres (MCF). The resulting fibre is used as a component in a two dimensional optical fibre accelerometer. The mirror is produced using a two step process: first a scanning process is used to make a rough cut to define the overall mirror structure. This is followed by a polishing process to create an optical surface finish. The machined 45° mirror can be accurately aligned with optical fibre core, which avoids issues associated with the alignment of external turning mirror components. Proof-of-concept tests demonstrate the use of such a fibre as a two axis acceleration sensor that is interrogated interferometrically. The sensor operated between 0.5g and 4.5g with a cross talk of -24.3dB between axes.

Original languageEnglish
Title of host publication24th International Conference on Optical Fibre Sensors
PublisherSPIE
Volume9634
ISBN (Print)9781628418392
DOIs
Publication statusPublished - Sep 2015
Event24th International Conference on Optical Fibre Sensors - Curitiba, Brazil
Duration: 28 Sep 20152 Oct 2015

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9634
ISSN (Print)1996-756X

Conference

Conference24th International Conference on Optical Fibre Sensors
Abbreviated titleOFS 2015
CountryBrazil
CityCuritiba
Period28/09/152/10/15

Keywords

  • 45°mirror
  • Acceleration sensing
  • Focused ion beam
  • Micro-machining

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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  • Cite this

    Li, J., Sun, J., Miliar, M. M., Dong, F. Z., Maier, R. R. J., Hand, D. P., & MacPherson, W. N. (2015). Two dimensional optical fibre cantilever accelerometer. In 24th International Conference on Optical Fibre Sensors (Vol. 9634). [96341E] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9634). SPIE. https://doi.org/10.1117/12.2194681