| EPSRC Reference: |
GR/L73357/01 |
| Title: |
INTEGRATED OPTICAL MMWAVE DICHROIC SURFACES |
| Principal Investigator: |
Vardaxoglou, Professor Y |
| Other Investigators: |
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| Project Partners: |
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| Department: |
Electronic, Electrical & Systems Enginee |
| Organisation: |
Loughborough University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
21 November 1997 |
Ends: |
20 May 1999 |
Value (£): |
78,791
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| EPSRC Research Topic Classifications: |
| Optoelect. Devices & Circuits |
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| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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New material resonant structures are introduced, by considering dichroic (frequency selective) surfaces printed on a silicon substrate. Their performance characteristics are tuned using a technique by which an optical beam alters the (complex) dielectric properties of the semiconductor substrate. A finite thickness plasma is induced in the substrate by the optical beam. This will effectively switch on or off the frequency response of the structure. The plasma concentration dictated the level of switching. Material polarisation and dichroism are emerging properties of this technique. Temporal formations of arrays are generated by selective illumination or by selectively doping the substrate. Controlling their resonance allows phase changes when inserting these arrays as windows in waveguides, thus producing a leaky wave antenna. The leaky wave beam will be scanned as a function of the light pattern. Aperture efficiency is high with this technique. Due to transverse wave propagation insertion losses are reduced when compared to traditional grid loaded dielectric structures. The research is largely experimental in the frequency range 20-75 GHz. Exhisting computer models will be adapted to accommodate the semiconductor substrate and light illumination.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.lboro.ac.uk |