(19)

(11)

EP 1 129 379 A1

(12)

(43) Date of publication: 05.09.2001 Bulletin 2001/36 (21) Application number: 99957724.0 (22) Date of filing: 12.11.1999

(51) International Patent Classification (IPC)7: G02B 6/43, H01S 3/0933 (86) International application number: PCT/AU9901/001 (87) International publication number: WO 0029/891 (25.05.2000 Gazette 2000/21)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 12.11.1998 AU PP717098 (71) Applicant: THE UNIVERSITY OF SYDNEY Sydney,New South Wales 2006 (AU)	(72) Inventor: CANNING, John Carlton, NSW 2218 (AU) (74) Representative: Midgley, Jonathan Lee  Marks & Clerk57-60 Lincoln's Inn Fields GB-London WC2A 3LS GB-London WC2A 3LS (GB)