Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2006-04-25
2006-04-25
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
Reexamination Certificate
active
07034995
ABSTRACT:
An optical fiber amplifier is considered comprising a mono-mode core, a first cladding around said core and at least a further cladding around said first cladding while said first cladding includes a ring shaped active region doped with rare earth material surrounding said mono-mode core. Advantageously, the first cladding is designed with a radial refractive index following an almost continuous decreasing function for increasing radius. The use of a continuously decreasing refractive index for the cladding at the outer border of the ring shaped active medium optimize the efficiency of the coupling between the core and the cladding.
REFERENCES:
patent: 5949941 (1999-09-01), DiGiovanni
patent: 6288835 (2001-09-01), Nilsson et al.
patent: 6819846 (2004-11-01), Mozdy et al.
patent: 001055945 (2000-11-01), None
patent: 001128195 (2001-08-01), None
patent: 11121839 (1999-04-01), None
patent: WO 02/03510 (2002-01-01), None
Nilsson J et al: YB3+-Ring-Doped Fiber for High-Energy Pulse Amplification Optics Letters, Optical Society of America, Washington, US, vol. 22, No. 14, Jul. 15, 1997, pp. 1092-1094, XP000699832.
Ankiewicz A et al.: “Use of Graded Elliptical Cladding for Efficient Pumping of Doped Fiber Cores” Optics Communications, North-Holland Publishing Co. Amsterdam, NL, vol. 133, No. 1/6, 1997, pp. 82-86, XP000641426.
Bayart Dominique
Bongrand Isabelle
Bousselet Philippe
Gasca Laurent
Moreau Christine
ALCATEL
Hellner Mark
Sughrue & Mion, PLLC
LandOfFree
Enhanced pump absorbing double-clad fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enhanced pump absorbing double-clad fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced pump absorbing double-clad fiber will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3563188