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| EPSRC Reference: |
EP/F01502X/1 |
| Title: |
Sidewall control of multistate switchable photonic devices |
| Principal Investigator: |
Professor NJ Mottram |
| Other Investigators: |
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| Researcher Co-investigator: |
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| Project Partner: |
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| Department: |
Mathematics and Statistics |
| Organisation: |
University of Strathclyde |
| Scheme: |
Standard Research |
| Starts: |
01 November 2007 |
Ends: |
31 October 2010 |
Value (£): |
238,138
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| EPSRC Research Topic Classifications: |
| Displays |
Functional Organics and Polymers: Characterisation |
| Optical Communications |
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| EPSRC Industrial Sector Classifications: |
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| Related Grants: |
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| Panel History: |
| Panel Date | Panel Name | Outcome |
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26 Jul 2007
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Materials Prioritisation Panel July 07
|
Announced
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Summary |
The development of multilevel, multistable switchable phase structures is of significant importance for photonic switching since bi/multistability in optical telecommunications switches will enable (i) enhanced network security after a power outage, since the device would continue to operate and be optically transparent, and (ii) redundancy management, where semi permanent re-routing can easily be implemented. In this project, we build on recent work where we have demonstrated the possibility of not only bistability, but multistability, by micro-structuring the sidewall in a planar aligned liquid crystal layer in order to control alignment. Such azimuthal bistability has previously been reported in liquid crystal devices using surface gratings, surface bi-gratings and periodic arrays of posts on one of the confining substrates. However, in the proposed work the use of the sidewall avoids the need for index matching with surface structures and allows for more functionality in the substrate surface, for instance so that it can be used as an active waveguide cladding. The collaboration between an applied mathematician, Dr Mottram (Strathclyde University), and a materials physicist, Dr Brown (Nottingham Trent University), has allowed this new approach to develop from theoretical possibility to a practical demonstration of feasibility. The proposed project seeks funding to create novel structures that possess stable static states, to investigate dynamic switching between the states, and to investigate the optical and diffractive properties of multistable structures.
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| Final Report Summary |
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No final report summary is available for this grant.
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| Further Information: |
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| Organisation Website: |
http://www.strath.ac.uk |
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