Optical: systems and elements – Optical amplifier – Optical fiber
Reexamination Certificate
2005-03-29
2005-03-29
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Optical fiber
C359S337120
Reexamination Certificate
active
06873457
ABSTRACT:
An optical amplifier for use in, for example, a wavelength multiplexing optical communication system, in order to allow an excitation light source to be enlargeable or removable in accordance with an increase/decrease in the number of channels in signal light even if the optical communication system is in operation.
REFERENCES:
patent: 5510926 (1996-04-01), Bayart et al.
patent: 5764404 (1998-06-01), Yemane et al.
patent: 5805322 (1998-09-01), Tomofuji
patent: 5815613 (1998-09-01), Fatehi et al.
patent: 5859938 (1999-01-01), Nabeyama et al.
patent: 5861980 (1999-01-01), Ono
patent: 5966236 (1999-10-01), Okuno
patent: 6023366 (2000-02-01), Kinoshita
patent: 6025947 (2000-02-01), Sugaya et al.
patent: 6055092 (2000-04-01), Sugaya et al.
patent: 6266169 (2001-07-01), Tomooka et al.
patent: 6373625 (2002-04-01), Kobayashi et al.
patent: 467396 (1992-01-01), None
patent: 637148 (1995-02-01), None
patent: 0805571 (1997-11-01), None
patent: 0812078 (1997-12-01), None
patent: 2280561 (1995-02-01), None
patent: 2294170 (1996-04-01), None
patent: 4-9929 (1992-01-01), None
patent: 4-165334 (1992-06-01), None
patent: 4-9829 (1992-07-01), None
patent: 4-3029 (1992-08-01), None
patent: 5-235445 (1993-09-01), None
patent: 6-53587 (1994-02-01), None
patent: 6-97883 (1994-04-01), None
patent: 7-147445 (1995-06-01), None
patent: 8-95097 (1996-04-01), None
patent: 10-12951 (1998-01-01), None
patent: 10-22979 (1998-01-01), None
patent: 10-51057 (1998-02-01), None
“Design of Operational Amplifier Circuit, ” written by M. Okamura, published in Sep. 30, 1990, pp. 77-85.
Technical Report of IEICE by T. Kashiwada, et al., entitled “A1 Concentration Dependence of Amplification Characteristics of EDF,” 1997, p. 273.
Technical Report of IEICE by M. Yamada, et al., entitled “Fluoride-Based ER-Doped Fiber Amplifier with Inherently Flat Gain Spectrum” in 1995, pp. 13-18.
“Advanced Electronics Series 1-16” written by S. Kawakama, et al., published Jul. 10, 1996, pp. 70-73.
D. Baney, et al., “WDM EDFA Gain Characterization with a Reduced Set of Saturating Channels,” IEEE Photonics Technology Letters, vol. 8, No. 12, Dec. 1996, pp. 1615-1617.
Chikama Terumi
Kinoshita Susumu
Fujitsu Limited
Hellner Mark
Staas & Halsey , LLP
LandOfFree
Optical amplifier, excitation light source control method... 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, excitation light source control method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical amplifier, excitation light source control method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3424269