(19)

(11)

EP 1 240 696 A2

(12)

(88) Date of publication A3: 21.03.2002 (43) Date of publication: 18.09.2002 Bulletin 2002/38 (21) Application number: 00992925.8 (22) Date of filing: 13.12.2000

(51) International Patent Classification (IPC)7: H01S 5/022, G02B 6/42 (86) International application number: PCT/US0042/790 (87) International publication number: WO 0104/7076 (28.06.2001 Gazette 2001/26)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 20.12.1999 US 466973 06.01.2000 US 477695 (71) Applicant: Corning Lasertron, Inc. Bedford, MA 01730 (US)	(72) Inventor: WU, Yongan San Jose, CA 95117 (US) (74) Representative: Poole, Michael John et al Corning LimitedPatents & Licensing DepartmentQuantum HouseMaylands Avenue Hemel Hempstead, Herts. HP2 7DE Hemel Hempstead, Herts. HP2 7DE (GB)