35GHz tunable planar Bragg grating using liquid crystal and electric field
35GHz tunable planar Bragg grating using liquid crystal and electric field
We present the first experimental demonstration of an electrically tunable, first order Bragg grating using liquid crystals. Similar devices have been modelled in the past but not experimentally realised. Using direct UV writing, a waveguide and Bragg grating are simultaneously defined in a planar silica on silicon substrate. Replacement of the overcladding with liquid crystal in the vicinity of the grating allows the electro-optic properties of the liquid crystal to be exploited. Interactions of the evanescent field with the variable refractive index of the liquid crystal allow the centre wavelength of the filter response to be tuned.
Sparrow, I.J.G.
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Emmerson, G.D.
89517051-daed-4f8e-aca6-f686d8c54e7c
Smith, P.G.R.
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Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Dyadyusha, A.
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2005
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
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Dyadyusha, A.
2d1d75d4-60f0-4437-8771-0d0b9a3c7931
Sparrow, I.J.G., Emmerson, G.D., Smith, P.G.R., Kaczmarek, M. and Dyadyusha, A.
(2005)
35GHz tunable planar Bragg grating using liquid crystal and electric field.
12th European Conference on Integrated Optics. ECIO 2005, Grenoble, France.
05 - 07 Apr 2005.
Record type:
Conference or Workshop Item
(Paper)
Abstract
We present the first experimental demonstration of an electrically tunable, first order Bragg grating using liquid crystals. Similar devices have been modelled in the past but not experimentally realised. Using direct UV writing, a waveguide and Bragg grating are simultaneously defined in a planar silica on silicon substrate. Replacement of the overcladding with liquid crystal in the vicinity of the grating allows the electro-optic properties of the liquid crystal to be exploited. Interactions of the evanescent field with the variable refractive index of the liquid crystal allow the centre wavelength of the filter response to be tuned.
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Published date: 2005
Venue - Dates:
12th European Conference on Integrated Optics. ECIO 2005, Grenoble, France, 2005-04-05 - 2005-04-07
Identifiers
Local EPrints ID: 38307
URI: http://eprints.soton.ac.uk/id/eprint/38307
PURE UUID: 7a95be29-4a20-4305-9a87-f4bc6edd93c6
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Date deposited: 07 Jun 2006
Last modified: 12 Dec 2021 02:52
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Contributors
Author:
I.J.G. Sparrow
Author:
G.D. Emmerson
Author:
A. Dyadyusha
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