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Proceedings Paper

Microstructured fibres for sensing applications
Author(s): M. N. Petrovich; A. van Brakel; F. Poletti; K. Mukasa; E. Austin; V. Finazzi; P. Petropoulos; E. O'Driscoll; M. Watson; T. DelMonte; T. M. Monro; J. P. Dakin; D. J. Richardson
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Paper Abstract

Microstructured fibers (MOFs) are among the most innovative developments in optical fiber technology in recent years. These fibers contain arrays of tiny air holes that run along their length and define the waveguiding properties. Optical confinement and guidance in MOFs can be obtained either through modified total internal reflection, or photonic bandgap effects; correspondingly, they are classified into index-guiding Holey Fibers (HFs) and Photonic Bandgap Fibers (PBGFs). MOFs offer great flexibility in terms of fiber design and, by virtue of the large refractive index contrast between glass/air and the possibility to make wavelength-scale features, offer a range of unique properties. In this paper we review the current status of air/silica MOF design and fabrication and discuss the attractions of this technology within the field of sensors, including prospects for further development. We focus on two primary areas, which we believe to be of particular significance. Firstly, we discuss the use of fibers offering large evanescent fields, or, alternatively, guidance in an air core, to provide long interaction lengths for detection of trace chemicals in gas or liquid samples; an improved fibre design is presented and prospects for practical implementation in sensor systems are also analysed. Secondly, we discuss the application of photonic bandgap fibre technology for obtaining fibres operating beyond silica's transparency window, and in particular in the 3μm wavelength region.

Paper Details

Date Published: 11 November 2005
PDF: 15 pages
Proc. SPIE 6005, Photonic Crystals and Photonic Crystal Fibers for Sensing Applications, 60050E (11 November 2005); doi: 10.1117/12.631617
Show Author Affiliations
M. N. Petrovich, Univ. of Southampton (United Kingdom)
A. van Brakel, Univ. of Southampton (United Kingdom)
F. Poletti, Univ. of Southampton (United Kingdom)
K. Mukasa, Univ. of Southampton (United Kingdom)
E. Austin, Univ. of Southampton (United Kingdom)
V. Finazzi, Univ. of Southampton (United Kingdom)
P. Petropoulos, Univ. of Southampton (United Kingdom)
E. O'Driscoll, BAE Systems (United Kingdom)
M. Watson, BAE Systems (United Kingdom)
T. DelMonte, BAE Systems (United Kingdom)
T. M. Monro, Univ. of Adelaide (Australia)
J. P. Dakin, Univ. of Southampton (United Kingdom)
D. J. Richardson, Univ. of Southampton (United Kingdom)

Published in SPIE Proceedings Vol. 6005:
Photonic Crystals and Photonic Crystal Fibers for Sensing Applications
Henry H. Du, Editor(s)

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