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First order phase change detection using planar waveguide Bragg grating refractometer

First order phase change detection using planar waveguide Bragg grating refractometer
First order phase change detection using planar waveguide Bragg grating refractometer
Solid-to-liquid and gas-to-liquid phase changes in water and ordered-to-isotropic phase changes in a nematic liquid crystal are detected with an optical sensor. A planar Bragg grating defined purely by refractive index modulation is covered with a water or liquid crystal overcladding and the temperature is controlled to trigger phase changes. Measurement of the Bragg wavelength allows changes of effective refractive index to be detected and discontinuities in behaviour caused by phase transitions can be clearly identified.
0946-2171
1-4
Sparrow, I.J.G.
3b11b080-98d5-41fe-8e15-bc12d17dc259
Emmerson, G.D.
89517051-daed-4f8e-aca6-f686d8c54e7c
Gawith, C.B.E.
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Smith, Peter
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931
Sparrow, I.J.G.
3b11b080-98d5-41fe-8e15-bc12d17dc259
Emmerson, G.D.
89517051-daed-4f8e-aca6-f686d8c54e7c
Gawith, C.B.E.
926665c0-84c7-4a1d-ae19-ee6d7d14c43e
Smith, Peter
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931

Sparrow, I.J.G., Emmerson, G.D., Gawith, C.B.E., Smith, Peter, Kaczmarek, M. and Dyadyusha, A. (2005) First order phase change detection using planar waveguide Bragg grating refractometer. Applied Physics B: Lasers and Optics, 81 (1), 1-4. (doi:10.1007/s00340-005-1872-8).

Record type: Article

Abstract

Solid-to-liquid and gas-to-liquid phase changes in water and ordered-to-isotropic phase changes in a nematic liquid crystal are detected with an optical sensor. A planar Bragg grating defined purely by refractive index modulation is covered with a water or liquid crystal overcladding and the temperature is controlled to trigger phase changes. Measurement of the Bragg wavelength allows changes of effective refractive index to be detected and discontinuities in behaviour caused by phase transitions can be clearly identified.

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Published date: 7 June 2005
Organisations: Optoelectronics Research Centre, Quantum, Light & Matter Group
Learn more about Optoelectronics Research Centre research

Identifiers

Local EPrints ID: 57603
URI: http://eprints.soton.ac.uk/id/eprint/57603
DOI: doi:10.1007/s00340-005-1872-8
ISSN: 0946-2171
PURE UUID: 58bd0a46-2d2a-40e6-b5c0-65066c6266fc
ORCID for C.B.E. Gawith: ORCID iD orcid.org/0000-0002-3502-3558
ORCID for Peter Smith: ORCID iD orcid.org/0000-0003-0319-718X

Catalogue record

Date deposited: 07 Aug 2008
Last modified: 16 Mar 2024 03:12

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Contributors

Author: I.J.G. Sparrow
Author: G.D. Emmerson
Author: C.B.E. Gawith ORCID iD
Author: Peter Smith ORCID iD
Author: M. Kaczmarek
Author: A. Dyadyusha

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