Microfabrication of integrated silicon optical cross-switches interfaced with silica optical waveguides. Project aims to fabricate novel silicon based optical switches in the form of cantilevered mirrors integrated to interface with silica optical waveguides integrated collimation lens. Significantly, it paves the way for low cost integration of optical switches with array waveguides for an all-optical dynamically reconfigurable dense wavelength division multiplexing network used in modern broad ....Microfabrication of integrated silicon optical cross-switches interfaced with silica optical waveguides. Project aims to fabricate novel silicon based optical switches in the form of cantilevered mirrors integrated to interface with silica optical waveguides integrated collimation lens. Significantly, it paves the way for low cost integration of optical switches with array waveguides for an all-optical dynamically reconfigurable dense wavelength division multiplexing network used in modern broadband telecommunication systems. International market demand for such devises is enormous. Expected outcomes include the development of arrays of low loss 2x2 integrated optical waveguide cross-switches prototypes, securing the intellectual property rights and disseminating the work internationally.Read moreRead less
New Approaches for Wireless Implantable Biomedical Devices. Wireless biomedical implants of the future will interface with biological systems to perform physiological tasks such as vision restoration, reanimation of paralyzed limbs, and chemical sensing. The potential benefit to society will come not only from alleviating human suffering and improving quality of life, but also by reducing the health care costs now directed to assist people with disabilities such as blindness, stroke and spinal-c ....New Approaches for Wireless Implantable Biomedical Devices. Wireless biomedical implants of the future will interface with biological systems to perform physiological tasks such as vision restoration, reanimation of paralyzed limbs, and chemical sensing. The potential benefit to society will come not only from alleviating human suffering and improving quality of life, but also by reducing the health care costs now directed to assist people with disabilities such as blindness, stroke and spinal-cord injury survivors. Using similar technologies, cochlear implants have already restored functional hearing to over 100,000 deaf patients around the world. The outcomes of the project can also be applied to a variety of other applications such environmental monitoring, security and identification systems. Read moreRead less
A neuromorphic binaural hearing sensor. A neuromorphic binaural hearing sensor will be created. The system includes two cochleae and targeted processing pathways in the auditory brainstem that aid in solving the Cocktail Party Problem: i.e. foreground-background sound separation, sound localisation, and sound recognition. The VLSI circuits will enable real-time implementation of complex auditory models. As we develop our VLSI binaural ear, we will experiment with afferent (feed forward) and ....A neuromorphic binaural hearing sensor. A neuromorphic binaural hearing sensor will be created. The system includes two cochleae and targeted processing pathways in the auditory brainstem that aid in solving the Cocktail Party Problem: i.e. foreground-background sound separation, sound localisation, and sound recognition. The VLSI circuits will enable real-time implementation of complex auditory models. As we develop our VLSI binaural ear, we will experiment with afferent (feed forward) and efferent (feed back) auditory signal processing that is similar to real auditory systems and that demonstrate efficient, effective, and low-power signal processing algorithms for binaural (two-sensor) hearing systems.Read moreRead less
Smart CMOS Vision Sensors in Deep Sub-0.25um CMOS Technologies. This research project aims to develop a new generation of smart vision sensors featuring on-chip and pixel-level implementation of human vision based algorithms. Built in state-of-the-art deep sub-0.25um CMOS technologies, these imagers will feature extensive in-pixel processing power in contrast to the currently commercially available CMOS vision sensors. This will enable on-chip vision-based decision making but also increased on-c ....Smart CMOS Vision Sensors in Deep Sub-0.25um CMOS Technologies. This research project aims to develop a new generation of smart vision sensors featuring on-chip and pixel-level implementation of human vision based algorithms. Built in state-of-the-art deep sub-0.25um CMOS technologies, these imagers will feature extensive in-pixel processing power in contrast to the currently commercially available CMOS vision sensors. This will enable on-chip vision-based decision making but also increased on-chip image processing. These innovative system-on-chip features will contribute towards the positioning of CMOS imaging technology as the technology of choice for most digital imaging applications, in place of the existing, and so far unchallenged, CCD technology.
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Investigation of vertical magneto-transport in infrared detector structures based on InAs/GaSb type-II superlattices. Infrared sensors and systems are finding increasing use in Australia's core industries: particularly defence, mineral exploration, environmental monitoring, precision agriculture, homeland security, and medical diagnostics. Due to the reduced cooling requirements, the Infrared detector structures to be investigated in this project have the potential to deliver high performance in ....Investigation of vertical magneto-transport in infrared detector structures based on InAs/GaSb type-II superlattices. Infrared sensors and systems are finding increasing use in Australia's core industries: particularly defence, mineral exploration, environmental monitoring, precision agriculture, homeland security, and medical diagnostics. Due to the reduced cooling requirements, the Infrared detector structures to be investigated in this project have the potential to deliver high performance infrared technology at a significantly lower cost and, hence, widening its applications. The new science proposed in this project, and new technological knowledge expected from its application, will allow Australian researchers to participate and significantly contribute to the international effort in this field and to exploit any developed intellectual property. Read moreRead less
Miniaturised Adiabatic Light Processing Devices. The project will develop, model and analyse a range of miniaturised light-processing devices for optical communications applications that rely soley on their geometrical design for their optical functionality. Such devices are less complex than devices that rely on other physical phenomena for their operation, such as interference, resonance or grating phenomena. They have potential application to a wide range of applications including optical tel ....Miniaturised Adiabatic Light Processing Devices. The project will develop, model and analyse a range of miniaturised light-processing devices for optical communications applications that rely soley on their geometrical design for their optical functionality. Such devices are less complex than devices that rely on other physical phenomena for their operation, such as interference, resonance or grating phenomena. They have potential application to a wide range of applications including optical telecommunications, optical sensing and biophotonics. The major outcome will be a range of novel devices that are very compact, have very low optical power loss and process light signals in ways that either cannot be readily achieved by other approaches or are simpler than other approaches.Read moreRead less
Electronic Auditory Pathway. We will develop electronic building blocks to investigate biological signal processing. In particular, we will investigate the auditory pathway and develop the most accurate electronic model of the biological cochlea and auditory nerve. These will be followed by electronic circuits that model the processing of sensory signals in the brain. Processing signals with neural spikes offers distinct advantages over current analogue and digital signal processing techniques i ....Electronic Auditory Pathway. We will develop electronic building blocks to investigate biological signal processing. In particular, we will investigate the auditory pathway and develop the most accurate electronic model of the biological cochlea and auditory nerve. These will be followed by electronic circuits that model the processing of sensory signals in the brain. Processing signals with neural spikes offers distinct advantages over current analogue and digital signal processing techniques in terms of noise, energy consumption and extraction of temporal information. We will implement the first spike-based models of pitch and timbre perception, and a neural model of speech recognition in noisy environments.Read moreRead less
Dynamic signal processing with currents. Today's digital computers and communications devices, such as mobile phones, contain continuous time filters as necessary and important components. We will investigate an integrated circuit design methodology for the creation of fully programmable versions of such filters. Currently these filters are redesigned for each application and are often external to the IC. This increases the size and cost of the design. Another outcome of the methodology is a cur ....Dynamic signal processing with currents. Today's digital computers and communications devices, such as mobile phones, contain continuous time filters as necessary and important components. We will investigate an integrated circuit design methodology for the creation of fully programmable versions of such filters. Currently these filters are redesigned for each application and are often external to the IC. This increases the size and cost of the design. Another outcome of the methodology is a current domain signal processor. This will be capable of modelling complex systems such as biological neurons and stock option pricing. We will build these systems and interface them with digital computers.Read moreRead less
Model-Reduction Techniques for Control, Communication and Circuits. Model reduction is an important area of study in the analysis and design of dynamical systems. Its objective is to obtain a low-order model given a high-order system model such that the low-order model closely approximates the input-output behaviour of the original high-order system. Although theory and application of model reduction is well developed, there are many unresolved issues such as efficient model reduction techniq ....Model-Reduction Techniques for Control, Communication and Circuits. Model reduction is an important area of study in the analysis and design of dynamical systems. Its objective is to obtain a low-order model given a high-order system model such that the low-order model closely approximates the input-output behaviour of the original high-order system. Although theory and application of model reduction is well developed, there are many unresolved issues such as efficient model reduction techniques for large-scale circuit simulation and communication applications, frequency-weighted model reduction techniques for controller-design applications, and error bounds for the reduction techniques. The project aims to address these issues.Read moreRead less
Microelectronic Applications of Improved Silicon Light Emission. While semiconductor silicon chips have been the workhorse of the microelectronics revolution, more complex semiconductor materials have driven the communications revolution. Australian developments during 2001 have largely dispelled the myth that silicon is fundamentally a poor emitter of light. This project aims to build on this work by developing silicon light emitters suitable for integration into high density integrated circu ....Microelectronic Applications of Improved Silicon Light Emission. While semiconductor silicon chips have been the workhorse of the microelectronics revolution, more complex semiconductor materials have driven the communications revolution. Australian developments during 2001 have largely dispelled the myth that silicon is fundamentally a poor emitter of light. This project aims to build on this work by developing silicon light emitters suitable for integration into high density integrated circuits, adding a new dimension to the capabilities of these circuits, driving microelectronics and the information age to the next stage of development.Read moreRead less