Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths
Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74º has been obtained experimentally in a silicon device, in good agreement with rigorous coupled-wave computer simulations. Further simulations predict that adding quarter wave dielectric antireflection (AR) coatings to the outer surfaces of the device can reduce the insertion loss to below 4 dB. The use of rectangular grooved gratings provides increased retardance and reduced loss. It is predicted that a coupled device with rectangular grooved gratings will be capable of maximum retardance in excess of 180º, with low insertion loss (<0.6 dB). The sensitivity of the wave retardation as a function of mechanical separation has a peak value of 485º/mm. The design and micromachining fabrication techniques scale for operation at submillimeter wavelengths.
100 GHz, Si, V-groove gratings, anisotropic media, artificial dielectric gratings, birefringence, insertion loss, micromachining fabrication techniques, millimeter wave devices, quarter wave dielectric antireflection coatings, rectangular grooved gratings, retardance silicon device, submillimeter wave devices, variable polarization compensation, wave retardation
3072-3079
Drysdale, T.D.
bc22ffda-bd6b-412b-82eb-37e3e2b54237
Blaikie, R.J.
54059fe4-6fc4-43e1-91da-c81ebf33fd16
Chong, H.M.H.
795aa67f-29e5-480f-b1bc-9bd5c0d558e1
Cumming, D.R.S.
28f534a1-5cbd-4270-8de3-bf6dbebec5a7
November 2003
Drysdale, T.D.
bc22ffda-bd6b-412b-82eb-37e3e2b54237
Blaikie, R.J.
54059fe4-6fc4-43e1-91da-c81ebf33fd16
Chong, H.M.H.
795aa67f-29e5-480f-b1bc-9bd5c0d558e1
Cumming, D.R.S.
28f534a1-5cbd-4270-8de3-bf6dbebec5a7
Drysdale, T.D., Blaikie, R.J., Chong, H.M.H. and Cumming, D.R.S.
(2003)
Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths.
IEEE Transactions on Antennas and Propagations, 51 (11), .
(doi:10.1109/TAP.2003.818787).
Abstract
Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74º has been obtained experimentally in a silicon device, in good agreement with rigorous coupled-wave computer simulations. Further simulations predict that adding quarter wave dielectric antireflection (AR) coatings to the outer surfaces of the device can reduce the insertion loss to below 4 dB. The use of rectangular grooved gratings provides increased retardance and reduced loss. It is predicted that a coupled device with rectangular grooved gratings will be capable of maximum retardance in excess of 180º, with low insertion loss (<0.6 dB). The sensitivity of the wave retardation as a function of mechanical separation has a peak value of 485º/mm. The design and micromachining fabrication techniques scale for operation at submillimeter wavelengths.
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More information
Published date: November 2003
Keywords:
100 GHz, Si, V-groove gratings, anisotropic media, artificial dielectric gratings, birefringence, insertion loss, micromachining fabrication techniques, millimeter wave devices, quarter wave dielectric antireflection coatings, rectangular grooved gratings, retardance silicon device, submillimeter wave devices, variable polarization compensation, wave retardation
Organisations:
Nanoelectronics and Nanotechnology
Identifiers
Local EPrints ID: 264947
URI: http://eprints.soton.ac.uk/id/eprint/264947
PURE UUID: 903b140b-93e1-4d67-9cb7-bf04f1cadd43
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Date deposited: 11 Dec 2007 15:54
Last modified: 15 Mar 2024 03:30
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Contributors
Author:
T.D. Drysdale
Author:
R.J. Blaikie
Author:
H.M.H. Chong
Author:
D.R.S. Cumming
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