About: Professor Chu’s research activity has been in the areas of both theoretical and experimental condensed matter physics, semiconductor devices and materials, nanostructures and properties, ferroelectrics non-volatile memory devices, organic electronics and inkjet fabrication process. His current research includes space light modulation using holography for true 3D displays, digital illumination and optical communications. Combining 3D image reconstruction with full parallax and occlusion effects and spatial interactions in spectrum and time domains will provide participants the immersive experience which never exists before. This is now being explored through research work to increase both spatial and temporal bandwidths and development of new approaches to best utilise the existing technology. Energy saving, in particular in the built environment, presents a new challenge to electronic/photonic for innovative new technologies. Professor Chu’s research is focusing on the means for both the active modulation of the spatial profile and impact of lighting and the passive control of solar shading and radiation. Various successful approaches, including laminated electro-active foils (LEAFs) for retro-fitting and development at fundamental level of new devices and materials have been demonstrated.
Title: Wavelength Selective Switchesfor Software Defined Networks and Data Centres
Abstract: The high demand on the data traffic in modern optical communication networks pushes the backbone of the network for long distance data communication to all optical with the information kept in the optical domain in a wavelength division multiplexing (WDM)manner throughout the network until it reaches its final destination. It also requires dynamic routing and flexible definition of the network connectivity. This talk will review the advantages of holographic programmable wavelength selective switch (WSS) based on liquid crystal on silicon (LCOS) light engine as a key enabling technologies for software defined reconfigurable all optical networks, followed by the introduction of a new stacked WSS architecture to allow the WSSs to be reconfigured as ultra-high port count switches or non-blocking wavelength cross-connects (WXCs). Finally, it will address how this stacked WSS architecture can be utilized to meet the optical switching demand in large-scale data centres.