Photonics and Electronics Research Lab

2012 Seminars

Associative Capacitive Networks based on Nanoscale Complementary Resistive Switches

Date: 11:00am Monday 11 February 2013

Venue: Level 4 Meeting Room, Walter Boas Building #163

Presenters: Dr Omid Kavehei

This presentation is part of the Photonics & Electronics Research Lab Seminar series. The seminar will be presented by Dept of EEE Research Fellow, Omid Kavehei titled 'Associative Capacitive Networks based on Nanoscale Complementary Resistive Switches'.

In this talk, Omid will discuss background and known applications in memristive electronics. He will then present ongoing research and challenges in designing nanocrossbar-based systems including associative capacitive networks.

The continuous development of new materials in the field of memory applications involves both new approaches within chip architecture and information processing. Advantages of Resistive Switch-based memories are the feasibility of highly parallel processing, high scalability of hardware, CMOS compatible technology and wide interconnectivity as well …

Optical parametric node devices for energy efficient networks

Date: 11:00am Friday 8 February 2013

Venue: Richard Newton Rooms, Level 5, Electrical and Electronic Engineering Building, Building Number 193

Presenters: Dr Shu Namiki

This presentation is part of the Photonics & Electronics Research Lab Seminar series. The talk will discuss the unique features and applications of the optical parametric processes in highly nonlinear fibers that suit the realization of node functions of the dynamic optical path network, which can resolve energy issues of the future network.

Dr Shu Namiki is the Research Team Leader of Optical Signal Processing Systems Team, Network Photonics Research Center, the National Institute of Advanced Industrial Science and Technology (AIST), Japan. His research topics include low-energy-consumption optical networking, fiber optical parametric node devices. Previously, he worked for Furukawa Electric Co., Ltd. from 1988 to 2005, where he developed award-winning high-power pump laser packaging technologies, …

Impact of Local Storages on Power Performance of PONs

Date: 11:00am Monday 10 December 2012

Venue: Richard Newton Rooms, Level 5, Electrical and Electronic Engineering Building #193

Presenters: Sandu Abeywickrama

The next Photonics & Electronics Lab Seminar will be presented by RHD student, Sandu Abeyrickrama. This seminar is a conference practice talk for the Photonics Global Conference.

IImplications of implementing a local storage within Passive Optical Networks to enhance Video-on-Demand delivery are critically examined in this work. We have previously conducted packet level simulations in order to study enhancements of Quality of Service attributes. Two architectures where the Passive Optical Network is equipped with and without a local storage server were simulated to study the behavior of packet delays. In this work, power consumption models for the mentioned two architectures are formulated to study the impact on network operational power requirement by the addition of local storage equipment. We present simulation …

Energy Consumption of Next-Generation Optical-Wireless Converged Networks

Date: 12:00pm Monday 29 October 2012

Venue: Level 4 Meeting Room, Walter Boas Building #163

Presenters: Chathurika Ranaweera

This seminar is a conference practice talk for the Asia Communications and Photonics Conference (ACP2012).

The energy consumption of the Internet is recently being identified as one of the main potential contributors for global energy consumption and Carbon footprint. Recent researches show that the contribution of the access network to the total Internet energy consumption is comparatively higher than the other segments of the network. The optical-wireless convergence is becoming one of the evolutionary access network technologies that provide quality-of-service (QoS) guaranteed ubiquitous access to end users in a cost effective way. In this talk, we compare three different plausible architectures for next-generation optical-wireless convergence in energy conservation viewpoint. Our analysis provides insight into QoS rich optical-wireless converged …

Experimental demonstration of high-speed full-duplex reconfigurable free-space card-to-card optical interconnects

Date: 12:00pm Monday 29 October 2012

Venue: Level 4 Meeting Room, Walter Boas Building #163

Presenters: Ke Wang

This seminar is a conference practice talk for the Asia Communications and Photonics Conference (ACP2012).

The interconnect bandwidth requirement in data-centers and high-performance computing has increased considerably over the last decade and conventionally copper cable based card-to-card interconnects have encountered several fundamental limitations. Multi-mode fiber and polymer waveguide based optical interconnects have been widely studied; however, these schemes are inherently point-to-point and non-reconfigurable. In this talk a high-speed full-duplex free-space based card-to-card optical interconnect architecture with flexibility and reconfigurability is proposed and experimentally demonstrated. 3*3 10 Gb/s data transmission for up to 30 cm is achieved with a receiver sensitivity better than -11.50 dBm.

Spilt coffee, cold waveguides and hot gratings

Date: 2:15pm Friday 31 August 2012

Venue: Level 4 Meeting Room, Walter Boas Building (Buidling 163)

Presenters: Professor John Canning

It’s often said some of the best ideas come from spilt (or thrown) coffee. In this talk Professor Canning will show you how contemplation over spilt coffee (at least high quality grade!) has helped to open up a new area of photonics that potentially allows room temperature fabrication of silica optical waveguides and what this means. The heart of the process is really about understanding materials and what might be possible with them. To further demonstrate how new tricks with old materials can actually be useful, he’ll go from cold fabrication of waveguides to high temperature fabrication of fibre gratings – ones that can reach over 1200C operation opening new frontiers in optical diagnostics for extreme or harsh environments. Examples include measuring the actual temperatures involved in optical fibre ferrule preparation through to optimising …

Theoretical and Experimental Study on High Spectral Efficiency CO-OFDM Systems

Date: 11:00am Monday 13 August 2012

Venue: Richard Newton Rooms, Level 5, EEE Building #193

Presenters: Xi Chen

Xi Chen, PhD student in the Department of Electrical & Electronic Engineering will present a seminar as part of the Photonics & Electronics Lab seminar series, titled "Theoretical and Experimental Study on High Spectral Efficiency CO-OFDM Systems".

Coherent optical OFDM (CO-OFDM) has attracted significant attention from the optical communications community as a potential candidate for long-haul 100-Gb/s to 1-Tb/s Ethernet transport. In this talk, the fibre nonlinearity impact on CO-OFDM transmission and its mitigation strategy is addressed. Also demonstrated is a show of spectrally-efficient CO-OFDM systems by using novel few-mode fibers.

Few-Mode Optical Fibres

Date: 11:00am Monday 16 July 2012

Venue: Richard Newton Rooms, Level 5, EEE Building #193

Presenters: Professor John Love

The ever-increasing demand for bandwidth in long-distance single-mode optical fibre transmission systems has seen the development and mass application of wavelength division multiplexing in recent years. To further increase the capacity of a single fibre, interest is now growing in the use of few-mode optical fibres, where each bound mode is used as a totally independent data channel, complete with its own wavelength division multiplexing.

One of the challenges in such mode multiplexing systems is the individual excitation and detection of each mode channel. This talk will present recent work that addresses this problem in two different ways, one approach using multi-port, few-mode Y-junctions and the other approach using mode-selective couplers.


Contact Us

Prof Christina Lim

Director, Photonics and Electronics

E: