2005 Successful ARC Linkage International (Awards)

Chief Investigator(s):	Dr MJ Qin; Prof S Ding
		2005 $	2006 $	2007 $	Total $
		$11,300	$11,300	$11,300	$33,900
Title:	Molecular dynamic simulation and experimental study on the mechanisms of high critical current density in superconductors
Summary:	The aim of this project is to establish a collaboration between the Institute for Superconducting and Electronic Materials (ISEM) and the team at Nanjing University to study the mechanisms of high critical current density (or flux pinning) in superconductors. Molecular dynamic simulation combined with experimental techniques, such as transport and magnetic measurements will be used. The results of this work will expand our understanding of the pinning mechanisms of high temperature superconductors and MgB2 superconductors, with the hope of further enhancing the current carrying capacity, and therefore promoting the practical applications of superconductors.

Chief Investigator(s):	Dr J Xi; A/Prof Y Yu; Prof JF Chicharo; Dr E Li; A/Prof H Ye
		2005 $	2006 $	2007 $	Total $
		$18,000	$18,000	-	$36,000
Title:	Measuring the linewidth enhancement factor and optical feedback level factor of semiconductor lasers based on optical feedback self-mixing interferometry
Summary:	This project aims to develop a high performance solution for the challenging problem of measuring the linewidth enhancement factor (LEF) of semiconductor lasers (SLs) and the optical feedback level factor, C, for the optical feedback self-mixing (OFSM) systems. Specific outcomes of the research include (1) a new model for an optical feedback self-mixing effect, (2) a new approach for measuring LEF and C based on the proposed model, (3) signal processing algorithms for improving the performance of the proposed approach, and (4) an OFSM system prototype based on the new model and algorithms.