(19)

(11)

EP 1 340 295 A2

(12)

(88) Date of publication A3: 27.12.2002 (43) Date of publication: 03.09.2003 Bulletin 2003/36 (21) Application number: 01993962.8 (22) Date of filing: 08.11.2001

(51) International Patent Classification (IPC)7: H01S 3/067, H01S 3/094 (86) International application number: PCT/GB0104/944 (87) International publication number: WO 0203/9552 (16.05.2002 Gazette 2002/20)

(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: 09.11.2000 US 710372 (71) Applicant: Bookham Technology PLC Abingdon,Oxon OX14 4RY (GB)	(72) Inventors: DI-MURO, Rodolfo Harlow, Essex CM17 9PH (GB) JONES, Kevan Totnes, Devon TQ9 7UV (GB) MCCLEAN, Ian Brixham, Devon TQ5 8DH (GB) (74) Representative: Harding, Richard Patrick  Marks & Clerk,4220 Nash CourtOxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)