(19)
(11) EP 1 649 562 A1

(12)

(43) Date of publication:
26.04.2006 Bulletin 2006/17

(21) Application number: 04767957.6

(22) Date of filing: 02.08.2004
(51) International Patent Classification (IPC): 
H01S 3/067(2000.01)
H01S 3/10(1968.09)
(86) International application number:
PCT/GB2004/003330
(87) International publication number:
WO 2005/013445 (10.02.2005 Gazette 2005/06)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(30) Priority: 31.07.2003 GB 0317952

(71) Applicant: SPI Lasers UK Limited
3 Wellington Park Tollbar Way Hedge End Southampton SO30 2QU (GB)

(72) Inventors:
  • ZERVAS, Mikhail, Nicholaos
    Southampton, Hampshire SO15 5SR (GB)
  • GHIRINGHELLI, Fabio
    Bassett, Southampton SO16 7PB (GB)

(74) Representative: Jones, Graham Henry 
Graham Jones & Company 77 Beaconsfield Road
Blackheath, London SE3 7LG
Blackheath, London SE3 7LG (GB)

   


(54) LD PUMPED FIBRE AMPLIFIER WITH SECOND RESONATOR OR INPUT SIGNAL FOR GAIN LIMITATION