Optical: systems and elements – Optical amplifier – Raman or brillouin process
Reexamination Certificate
2005-03-08
2005-03-08
Hellner, Mark (Department: 3663)
Optical: systems and elements
Optical amplifier
Raman or brillouin process
C359S337400
Reexamination Certificate
active
06865015
ABSTRACT:
In the case of broadband optical transmission, the quality of a wavelength division multiplex (WDM) signal which has a number of channels is adversely affected by different channels levels or signal-to-noise ratios, as well as by signal distortion. A method for optimization of the characteristics of a transmission system having cascaded Raman amplifiers, which each have a number of pump sources, for amplification of the (WDM) signal is described, using a quality parameter which is optimized as well as possible for each channel at the transmission path end. The method is particularly suitable for high levels of nonlinear signal distortion, and ensures compensation for and optimization of the qualify parameters for all the channels at the transmission path end. Different Raman gain profiles are selected as a function of the spectrum of the quality parameter by controlling the pump currents of the pump source of at least one of the Raman amplifiers.
REFERENCES:
patent: 6433922 (2002-08-01), Ghera et al.
patent: 6452716 (2002-09-01), Park et al.
patent: 6624926 (2003-09-01), Hayashi et al.
patent: 6690504 (2004-02-01), Nagel et al.
patent: 1 018 666 (2000-07-01), None
patent: 1 182 808 (2002-02-01), None
“Optical Fiber Telecommunications”, IIIA, Kaminov et al.
“Fiber Optics Communication Systems”, Ajrawal, 2ndEdition, pp. 323-328.
Bell Boyd & Lloyd LLC
Hellner Mark
Siemens Aktiengesellschaft
LandOfFree
Method and transmission system for optimization of the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and transmission system for optimization of the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and transmission system for optimization of the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3371724