Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2011-05-24
2011-05-24
Singh, Dalzid (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S033000, C398S147000, C398S159000
Reexamination Certificate
active
07949257
ABSTRACT:
One embodiment sets forth a technique for measuring chromatic dispersion using reference signals within the operational range of amplifiers used to refresh data signals. One red/blue laser pair in the transmission node is used for measuring dispersion and chromatic dispersion compensation is added at each line node in the system. Since reference and data signals propagate through each amplifier, the reference signals used to measure chromatic dispersion receive the same dispersion compensation (and will have the same residual dispersion) as the data signals. Therefore, any residual dispersion in the data signals will manifest itself in downstream dispersion measurements and, thus, can be corrected. The tunable dispersion compensator in each line node may be set to compensate for the measured dispersion, thereby compensating for both the chromatic dispersion of the link connecting the current node to the prior node and any uncorrected residual dispersion from prior nodes.
REFERENCES:
patent: 4750833 (1988-06-01), Jones
patent: 4799790 (1989-01-01), Tsukamoto et al.
patent: 6088088 (2000-07-01), Fortenberry
patent: 6313934 (2001-11-01), Fortenberry
patent: 6429929 (2002-08-01), Babin et al.
patent: 6515779 (2003-02-01), Fee
patent: 6765659 (2004-07-01), Bhatnagar et al.
patent: 6822747 (2004-11-01), Li et al.
patent: 6842547 (2005-01-01), Bülow
patent: 6889011 (2005-05-01), Fee et al.
patent: 7139118 (2006-11-01), Griggs et al.
patent: 7162154 (2007-01-01), Noé
patent: 7536108 (2009-05-01), Hirano et al.
patent: 7715092 (2010-05-01), Bolshtyansky et al.
Butler Douglas
Lin Christopher
Summa Mark
Wigley Peter
Williams Martin
Oclaro (North America), Inc.
Patterson & Sheridan L.L.P.
Singh Dalzid
LandOfFree
System and method for tunable chromatic dispersion compensation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for tunable chromatic dispersion compensation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for tunable chromatic dispersion compensation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2659070