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Proceedings Paper

Integrated Bragg grating sensor applied to detection of phase transitions in liquid crystal and water
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Paper Abstract

A planar Bragg grating in silica is used to form an integrated optical refractive index sensor. The device, inherently suited to remote sensing using single mode transmission fibre, is shown to clearly detect phase transitions in a nematic liquid crystal and in water. Transitions from ordered to isotropic, gas to liquid and liquid to solid as well as the reverse transitions can all be clearly identified. The sensor also allows supercooled liquid to be easily identified, a task previously found challenging by other sensor technologies.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624286
Show Author Affiliations
I. J. G. Sparrow, Univ. of Southampton (United Kingdom)
G. D. Emmerson, Stratophase Ltd. (United Kingdom)
C. B. E. Gawith, Univ. of Southampton (United Kingdom)
P. G. R. Smith, Univ. of Southampton (United Kingdom)
M. Kaczmarek, Univ. of Southampton (United Kingdom)
A. Dyadyusha, Univ. of Southampton (United Kingdom)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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