Optical: systems and elements – Optical amplifier – Beam combination or separation
Reexamination Certificate
2008-04-22
2008-04-22
Hughes, Deandra M (Department: 3663)
Optical: systems and elements
Optical amplifier
Beam combination or separation
C359S334000
Reexamination Certificate
active
07362499
ABSTRACT:
A Raman amplifier for amplifying a wavelength division multiplexed (WDM) light including signal lights wavelength division multiplexed together. The amplifier includes an optical amplifying medium and a controller. The optical amplifying medium uses Raman amplification to amplify the WDM light in accordance with multiplexed pump lights of different wavelengths traveling through the optical amplifying medium. The WDM light is amplified in a wavelength band divided into a plurality of individual wavelength bands. The controller controls power of each pump light based on a wavelength characteristic of gain generated in the optical amplifying medium in the individual wavelength bands.
REFERENCES:
patent: 4401364 (1983-08-01), Mochizuki
patent: 4616898 (1986-10-01), Hicks, Jr.
patent: 4805977 (1989-02-01), Tamura et al.
patent: 5452116 (1995-09-01), Kirkby
patent: 5703711 (1997-12-01), Hamada
patent: 5959750 (1999-09-01), Eskildsen et al.
patent: 5978130 (1999-11-01), Fee et al.
patent: 6016219 (2000-01-01), Fatehi et al.
patent: 6049417 (2000-04-01), Srivastava et al.
patent: 6052394 (2000-04-01), Lee et al.
patent: 6101024 (2000-08-01), Islam et al.
patent: 6115174 (2000-09-01), Grubb et al.
patent: 6151160 (2000-11-01), Ma et al.
patent: 6172803 (2001-01-01), Masuda et al.
patent: 6236498 (2001-05-01), Freeman et al.
patent: 6292288 (2001-09-01), Akasaka et al.
patent: 6304370 (2001-10-01), Barnard
patent: 6307668 (2001-10-01), Bastien et al.
patent: 6310716 (2001-10-01), Evans et al.
patent: 6407376 (2002-06-01), Korn et al.
patent: 6424459 (2002-07-01), Yokota
patent: 6429966 (2002-08-01), Hazell et al.
patent: 6466362 (2002-10-01), Friedrich
patent: 6469826 (2002-10-01), Masuda et al.
patent: 6483636 (2002-11-01), Sugaya et al.
patent: 6510000 (2003-01-01), Onaka et al.
patent: 6556340 (2003-04-01), Wysocki et al.
patent: 6624926 (2003-09-01), Hayashi et al.
patent: 6631028 (2003-10-01), Islam
patent: 6731877 (2004-05-01), Cao
patent: 6735394 (2004-05-01), Yue et al.
patent: 6882466 (2005-04-01), Shimojoh et al.
patent: 6891661 (2005-05-01), Hayashi et al.
patent: 7042636 (2006-05-01), Hayashi et al.
patent: 1 018 666 (2000-07-01), None
patent: 1 018 666 (2000-07-01), None
patent: A 2000-98433 (2000-04-01), None
patent: WO 00/49721 (2000-08-01), None
Kani, J., et al., “Fibre Raman amplifier for 1520 nm band WDM transmission,” Electron. Letts., Sep. 3, 1998, vol. 34, No. 18, pp. 1745-1747.
Takeda, M., et al., “Active Gain-Tilt Equalization by Preferentially 1.43 μm- or 1.48 μm-Pumped Raman Amplification,” OSA Tops, vol. 30, pp. 101-105, Optical Society of America, Jun. 9-11, 1999.
S. Kinoshita, “Advances in Optical Fiber Amplifiers for WDM Systems”, Asia-Pacific Conference on Communications and Optoelectronics and Communications Conference, APCC/OECC, Oct. 18, 1999.
Kinoshita, “Advances in Optical Fiber Amplifiers for WDM Systems”, Asia-Pacific Conference on Communications and Optoelectronics and Communications Conference, APCC/OECC, Proceedings, Conference Vitality to the New Century, vol. 2, Oct. 18, 1999, pp. 1333-1334, XP002171492.
Yamada, et al., “Broadband and Gain-Flattened Amplifier Composed of a 1.55 μm-Band and a 1.58 μm-Band Er3+-Doped Fibre Amplifier in a Parallel Configuration”, Electronics Letters, Apr. 10, 1997, vol. 33, No. 8.
European Search Report dated Oct. 31, 2005 for corresponding European Patent Application No. 01106362.5-2415.
Kinoshita, “Advances in Optical Fiber Amplifiers for WDM Systems”, Asia-Pacific Conference on Communications and Optoelectronics and Communications Conference, APCC/OECC Proceedings. Conference Vitality to the New Century, vol. 2, Oct. 18, 1999, pp. 1333-1334.
European Patent Office Communication dated Aug. 2, 2006 for corresponding European Patent Application No. 01 106 362.5-2411.
Hayashi Etsuko
Onaka Miki
Sugaya Yasushi
Tanaka Tomoto
Fujitsu Limited
Hughes Deandra M
Staas & Halsey , LLP
LandOfFree
Optical amplifier with pump light source control for Raman... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical amplifier with pump light source control for Raman..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical amplifier with pump light source control for Raman... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2791486