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Tunable liquid crystal waveguide devices for filter and sensor applications

Tunable liquid crystal waveguide devices for filter and sensor applications
Tunable liquid crystal waveguide devices for filter and sensor applications
We report on the experimental demonstration of electrically tunable Bragg grating using liquid crystals. Such concept and device have been modelled in the past, but not realised experimentally. Using Direct UV writing technique, a waveguide and Bragg grating are simultaneously patterned in a planar silica on silicon substrate. Overcladding in the vicinity of the grating can be replaced by liquid crystals to exploit their electro-optic properties. The interactions of the evanescent field with the variable refractive index of the liquid crystal allow the tuning of the centre wavelength of the filter. In this way a 35 GHz tunable planar Bragg grating using liquid crystal and electric field was demonstrated.
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Sparrow, I.J.G.
3b11b080-98d5-41fe-8e15-bc12d17dc259
Emmerson, G.D.
89517051-daed-4f8e-aca6-f686d8c54e7c
Smith, P.G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Sparrow, I.J.G.
3b11b080-98d5-41fe-8e15-bc12d17dc259
Emmerson, G.D.
89517051-daed-4f8e-aca6-f686d8c54e7c
Smith, P.G.R.
8979668a-8b7a-4838-9a74-1a7cfc6665f6
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931

Kaczmarek, M., Sparrow, I.J.G., Emmerson, G.D., Smith, P.G.R. and Dyadyusha, A. (2005) Tunable liquid crystal waveguide devices for filter and sensor applications. International Congress on Optics and Optoelectronics, Poland. 28 Aug - 02 Sep 2005. 6 pp . (doi:10.1117/12.623177).

Record type: Conference or Workshop Item (Paper)

Abstract

We report on the experimental demonstration of electrically tunable Bragg grating using liquid crystals. Such concept and device have been modelled in the past, but not realised experimentally. Using Direct UV writing technique, a waveguide and Bragg grating are simultaneously patterned in a planar silica on silicon substrate. Overcladding in the vicinity of the grating can be replaced by liquid crystals to exploit their electro-optic properties. The interactions of the evanescent field with the variable refractive index of the liquid crystal allow the tuning of the centre wavelength of the filter. In this way a 35 GHz tunable planar Bragg grating using liquid crystal and electric field was demonstrated.

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More information

e-pub ahead of print date: 2005
Venue - Dates: International Congress on Optics and Optoelectronics, Poland, 2005-08-28 - 2005-09-02

Identifiers

Local EPrints ID: 76420
URI: https://eprints.soton.ac.uk/id/eprint/76420
PURE UUID: 9e0466f1-aa1c-4268-bd66-829a35c1b1e9
ORCID for P.G.R. Smith: ORCID iD orcid.org/0000-0003-0319-718X

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 17 Oct 2019 00:38

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Contributors

Author: M. Kaczmarek
Author: I.J.G. Sparrow
Author: G.D. Emmerson
Author: P.G.R. Smith ORCID iD
Author: A. Dyadyusha

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