Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2005-08-09
2005-08-09
Sedighian, M. R. (Department: 2633)
Optical communications
Multiplex
Wavelength division or frequency division
C398S059000, C398S070000, C398S075000
Reexamination Certificate
active
06928247
ABSTRACT:
An optical fiber ring is provided carrying a plurality of WDM optical signals, each at a respective one of a plurality of wavelengths. Each optical signal carries data associated with a corresponding group of TDM add/drop multiplexers coupled to an optical path spaced from the optical fiber ring. The optical signals are extracted from the fiber ring with optical add/drop multiplexers, and the data carried by the optical signals is then supplied to the corresponding group of TDM add/drop multiplexers. Accordingly, instead of assigning an optical add/drop multiplexer to each TDM add/drop multiplexer, the optical add/drop multiplexers are assigned to respective groups of TDM add/drop multiplexers. As a result, optical loss as well as cost of the WDM ring are minimized.
REFERENCES:
patent: 5442623 (1995-08-01), Wu
patent: 5510923 (1996-04-01), Philippe et al.
patent: 5550818 (1996-08-01), Brackett et al.
patent: 5576875 (1996-11-01), Chawki et al.
patent: 5717795 (1998-02-01), Sharma et al.
patent: 5903371 (1999-05-01), Arecco et al.
patent: 5930016 (1999-07-01), Brorson et al.
patent: 5943150 (1999-08-01), Deri et al.
patent: 5986783 (1999-11-01), Sharma et al.
patent: 6002503 (1999-12-01), Mizrahi
patent: 6040933 (2000-03-01), Khaleghi et al.
patent: 6046833 (2000-04-01), Sharma et al.
patent: 6125118 (2000-09-01), Arnold
patent: 6141125 (2000-10-01), Blair et al.
patent: 6233077 (2001-05-01), Alexander et al.
patent: 0717521 (1996-06-01), None
patent: 0763909 (1997-03-01), None
patent: 9508247 (1995-03-01), None
patent: 9940700 (1999-12-01), None
Johansson, S., “Transparent Optical Multicarrier Networks”, Proceedings of the European Conference on Optical Communication, vol. 2, No. CONF. 18, 1992.
Cammarata Michael R.
Ciena Corporation
Sedighian M. R.
Singh Dalzid
Soltz David L.
LandOfFree
WDM ring transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with WDM ring transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WDM ring transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3487520