Integration of chalcogenide materials with nanophotonic circuits for reconfigurable control of light

Lead Research Organisation: University of Southampton
Department Name: Optoelectronics Research Centre

Abstract

By layering a thin film chalcogenide, GeSbTe (GST) on top of a multi-mode
interference region (MMI), it is hoped that the propagation of light can be
manipulated in glass to create a reconfigurable optical demultiplexer. By
crystallizing or amorphizing different patterns into the chalcogenide, the ef-
fective refractive index of the MMI can be modulated in such a way that
propagating light is guided towards a selectable output

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/N509747/1 01/10/2016 30/09/2021
1921283 Studentship EP/N509747/1 29/09/2016 31/03/2020 Matthew Delaney
 
Description I have investigated the feasibility of different materials for use with integrated photonics. (For guiding light in real time.) Some materials have been identified as too lossy, as their optical absorption is too high, and a new materials has been found that might be suitable, but further tests are ongoing. Finally a different technique (using ion implantation) is being studied as an alternative technique to achieving the same outcome. A comprehensive suite of computer simulations has been made for testing devices and materials quickly.
Exploitation Route The new family of materials holds a huge amount of promise in many different fields of physics, as they are the lowest loss phase change materials. They can be used to provide reconfigurability to any optical environment. Their properties could be continued to be tuned by doping, or using different capping layers/reflective mirrors as well as patterning with metamaterials. Doping with Te could be used to enhance their electronic properties as well.
Sectors Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software),Electronics

 
Description CHAMP 
Organisation University of Exeter
Department Physics and Astronomy
Country United Kingdom 
Sector Academic/University 
PI Contribution We collaborate together on developing new phase change materials for photonic devices. I test different compositions are study the phase change effects using photonic devices and an experimental setup capable of switching the materials between the amorphous and crystalline phase.
Collaborator Contribution They investigate a range of different materials and identify ones of interest. They also conduct similar experiments to me and confirm the findings.
Impact I havnt been involved in any publications or patents from my work yet.
Start Year 2016
 
Description CHAMP 
Organisation University of Oxford
Country United Kingdom 
Sector Academic/University 
PI Contribution We collaborate together on developing new phase change materials for photonic devices. I test different compositions are study the phase change effects using photonic devices and an experimental setup capable of switching the materials between the amorphous and crystalline phase.
Collaborator Contribution They investigate a range of different materials and identify ones of interest. They also conduct similar experiments to me and confirm the findings.
Impact I havnt been involved in any publications or patents from my work yet.
Start Year 2016