(19)

(11)

EP 1 405 115 A2

(12)

(88) Date of publication A3: 22.05.2003 (43) Date of publication: 07.04.2004 Bulletin 2004/15 (21) Application number: 02735588.2 (22) Date of filing: 14.06.2002

(51) International Patent Classification (IPC)7: G02B 6/34 (86) International application number: PCT/GB2002/002475 (87) International publication number: WO 2002/103435 (27.12.2002 Gazette 2002/52)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR (30) Priority: 14.06.2001 GB 0114494 (71) Applicant: Avanex UK Limited Livingston EH54 8SF (GB)	(72) Inventors: WEERDEN, Harm, Jan, Van NL-7546 GBT Enschede (NL) BEELEN, Gunter B-3440 Zoutleeuw (BE) (74) Representative: McDonough, Jonathan et al Urquhart-Dykes & LordTower North CentralMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)