Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2006-04-11
2006-04-11
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C385S027000
Reexamination Certificate
active
07027215
ABSTRACT:
The present invention relates to an optical component and others in structure capable of implementing improved compensation for a gain slope. The optical component is equipped with first and second Mach-Zehnder interferometers. The first Mach-Zehnder interferometer is provided with a first temperature controller for controlling a temperature of at least one of a part of an optical main path and a first optical side path, while the second Mach-Zehnder interferometer42is also provided with a second temperature controller for controlling a temperature of at least one of a part of the optical main path and a second optical side path. A filter circuit having a wavelength-dependent insertion loss is disposed between the first and second Mach-Zehnder interferometers, and a controller controls the temperatures of the optical paths by use of the first and second temperature controllers on the basis of the insertion loss of the filter circuit, thereby setting a loss for light of a predetermined wavelength propagating between a light input end and a light output end.
REFERENCES:
patent: 5596661 (1997-01-01), Henry et al.
patent: 6160627 (2000-12-01), Ahn et al.
patent: 6633698 (2003-10-01), Hatayama et al.
patent: 6823094 (2004-11-01), Goh et al.
patent: 001072937 (2001-01-01), None
patent: WO 01/05005 (2001-01-01), None
K. Inoue, et al., “Tunable Gain Equalization Using a Mach-Zehnder Optical Filter in Multistage Fiber Amplifiers,” IEEE Photonics Technology Letters, vol. 3, No. 8, pp. 718-720 (1991).
H. Toba, et al., “Demonstration of Optical FDM Based Self-Healing Ring Network Employing Arrayed-Waveguide-Grating ADM Filters and EDFAs,” Proceedings of ECOC '94, pp. 263-266 (1994).
M. Fukutoku, et al., OAA1996, Tech. Dig, FA4.
Hatayama Hitoshi
Kakui Motoki
Shigematsu Masayuki
Shitomi Tatsuhiko
Hellner Mark
McDermott Will & Emery LLP
Sumitomo Electric Industries Ltd.
LandOfFree
Optical component, optical amplification module, and optical... 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 component, optical amplification module, and optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical component, optical amplification module, and optical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3539066