Optical communications – Diagnostic testing – Test signal
Reexamination Certificate
2007-02-13
2007-02-13
Hughes, Deandra M. (Department: 3663)
Optical communications
Diagnostic testing
Test signal
Reexamination Certificate
active
10903999
ABSTRACT:
A transmission wavelength band in an optical transmission line is divided into a plurality of sub-bands and signal lights or an ASE dummy light is disposed per sub-band as a unit. The optical power of the ASE dummy light in each sub-band is controlled so as to realize the gain profile at a full implementation in the optical transmission line. While new signal lights are being added, the optical power of whole ASE dummy lights or the optical power of the ASE dummy lights in sub-bands adjacent to the sub-band in which the new signal lights are to be added is controlled while increasing the optical power of the new signal lights so that the transmission characteristics of the existing signal lights are not affected by the signal addition.
REFERENCES:
patent: 6721507 (2004-04-01), Iwata et al.
patent: 6738184 (2004-05-01), Hayashi et al.
patent: 6868200 (2005-03-01), Kimotsuki et al.
patent: 6907195 (2005-06-01), Yu et al.
patent: 6944399 (2005-09-01), Yu et al.
patent: 2003/0090757 (2003-05-01), Ohtani
patent: 2003/0113117 (2003-06-01), Taneda
patent: 2004/0247312 (2004-12-01), Hasuo et al.
patent: 2006/0051093 (2006-03-01), Manna
patent: 1213865 (2002-06-01), None
patent: 2002-353939 (2002-12-01), None
patent: 2002353939 (2002-12-01), None
patent: 2003-169037 (2003-06-01), None
patent: 2005051596 (2005-02-01), None
Inoue et al. In-Service Upgrade Method for DWDM Submarine Cable System Using ASE Dummy Lights. OFCC 2004. Feb. 23-27, 2004. vol. 1.
T. Inoue et al, “In-Service Upgrade Method for DWDM Submarine Cable System Using ASE Dummy Lights”, Optical Fiber Communication Conference 2004, vol. 1, Feb. 23, 2004, 3 pages.
European Search Report, dated Aug. 1, 2005, for Application No. 04017886.5, in the name of KDDI Submarine Cable Systems Inc., et al.
Goto Koji
Inoue Takanori
Taga Hidenori
Christie Parker & Hale, LLP.
Hughes Deandra M.
KDDI Submarine Cable Systems Inc.
Mitsubishi Denki & Kabushiki Kaisha
LandOfFree
Method for upgrading an optical transmission system and an... 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 for upgrading an optical transmission system and an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for upgrading an optical transmission system and an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3823972