Eamonn Martin
School of Electronic Engineering,
Dublin City University
Supervisors: Prof. Liam Barry
Eamonn graduated from Dublin City University in 2010 with a M.Sc. degree in Electronic Systems(First Class Honours) majoring in nanotechnology along with his B.Sc. degree in Electronic Engineering (First Class Honours) which was completed in 2009. For his master’s project, Eamonn designed and constructed a remote controlled hydrogen vehicle utilising fuel cell technology while researching the viability of hydrogen as a source of renewable energy for Ireland. In January 2011, Eamonn joined the Radio and Optical Communications Lab which is part of the RINCE Institute in Dublin City University.
Current Eamonn's research:
Photonic generation and distribution of microwave and millimetre wave data signal
Millimeter wave (mm-wave) offer broadband communication in an unlicensed band (57-64 GHz) that can be exploited by mobile terminals with an indoor environment to provide high speed multimedia services. Due to the limited transmission range of 60GHz over air, the distribution of mm-waves is not straightforward. Therefore, mm-wave over optical fibre is considered as an attractive solution for extending the transmission distance and decreasing the complexity of these wireless networks. The main focus of this research will be to investigate a technique to generate an optical mm-wave signal based on an externally injected and directly modulated semiconductor laser diode. This technique can be employed for the distribution of data signals from an existing fibre optic local area network (LAN) or an external network, using Radio-over-Fibre technology. An optical on-off keyed (OOK) data signal in the fibre optic network can be used as the externally injected signal into the laser and this optical injection changes the timing when the pulses are generated in the laser depending on whether a logical “1” or “0” is injected into the GSL. Two optical tones spaced by the required mm-wave frequency can be filtered from the optical signal to create the phase-shift-keyed (PSK) mm-wave signal sitting on an optical carrier that is distributed to antenna units through fibre links. At the antenna, these two tones then beat together at a high speed photodetector for transmission to the terminal unit that may be used for delivering high speed data for wireless home multimedia applications such as laptop, HDTV or mobile device.
This project will focus on optimisation of the signal generation in the transmitter, through the development of suitable optical filtering techniques, and investigate techniques to overcome degradation in system performance due to fibre propagation.
List of publications:
- Eamonn Martin, Regan Watts, Laurent Bramerie, and Liam Barry; Mm-wave and THz Radiation Generation Using Quantum-Dash Semiconductor Lasers; Research Colloquium on Communications and Radio Science into the Twenty First Century
ICGEE is funded by:
