Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2005-05-17
2005-05-17
Chan, Jason (Department: 2633)
Optical communications
Multiplex
Wavelength division or frequency division
C398S045000, C398S050000, C398S049000
Reexamination Certificate
active
06895186
ABSTRACT:
A system for accessing a wavelength-division-multiplexed (“WDM”), bidirectional optical fiber ring network having first and second network fibers for carrying WDM signals in opposite directions. The system includes a network node intersecting the first and second fibers of the ring network. The network node is coupled to a network access station through a single pair of access fibers. The network access station has a single array of receiving elements and a single array of transmitting elements. The network node has two wavelengths add drop multiplexers (“WADMs”) each having a first input, a second input, a first output and a second output. The WADMs can be each individually set to a bar state or cross state for each one of the wavelengths on the ring network.
REFERENCES:
patent: 5550818 (1996-08-01), Brackett et al.
patent: 5647035 (1997-07-01), Cadeddu et al.
patent: 5717795 (1998-02-01), Sharma et al.
patent: 5959749 (1999-09-01), Danagher et al.
patent: 6061157 (2000-05-01), Terahara
patent: 6204943 (2001-03-01), Hamel et al.
patent: 6459516 (2002-10-01), Mizrahi et al.
patent: 6466341 (2002-10-01), Lumish et al.
patent: 6476946 (2002-11-01), Bruyere et al.
patent: 0668674 (1995-08-01), None
patent: 0668674 (1998-04-01), None
patent: 9706614 (1997-02-01), None
Abdalla et al., “A WDM Ring Architecture Based on Integrated Group-Search Wavelength Add/Drop Multiplexers”, International Conference on Telecommunications, Jun. 1998, pp 494-498.
Zhang et al., “An Effective and Comprehensive Solution to Traffic Grooming and Wavelength Assignment i SONET/WDM Rings”, Part of SPIE Conference on All-Optical Networking, SPIE vol. 3531, Nov. 1998, pp. 221-232.
Simmons et al., “Quantifying the Benefit of Wavelength Add-Drop in WDM Rings with Distance-Independent and Dependent Traffic”, Journal of Lightwave Technology, vol. 17, No. 1, Jan. 1999, pp. 48-57.
Andrew Lord, “SeaMeWe3: a technical perspective”, The Institution of Electrical Engineers, pp. 1-6, 1998.
Hamada et al., “WDM four-fiber ring with add/drop acousto-optic tunable filter and 4×4 optical switch”, Thursday Afternoon, OFC '97 Technical Digest, pp. 313-314.
Keang-Po Ho et al., “TuR System Demonstration”, Tuesday Evening, OFC '97 Technical Digest, pp. 90-91.
Simeonidou et al., “Submerged WDM Network Implementation Using All Optical Wavelength Routers”, Alcatel Submarine Networks, 1997, pp. 1-5.
Berthelon et al., “Experimental assessment of node cascadability in a reconfigurable survivable WDM ring network”, Broadband Optical Networks Proceedings, Aug. 5-7th, 1996.
Perrier et al., “4-channel, 10-Gbit/s capacity self-healing WDM ring network with wavelength add/drop multiplexers”, Thursday Morning, OFC '96 Technical Digest, pp. 218-220.
D.T. van Veen et al., “Design of an All-Optical Self-Healing Ring Network and its Interconnection to a Core Transport Network”, CTIT Technical Report series, No. 96-44. 1997.
Hunter et al., “Wavelength use in partical re-use optical bus networks”, Thursday Afternoon, OFC '98 Technical Digest, pp. 360-361.
Arecco et al., “All-Optical Path Protection in the “Prometeo1” Test Bid: An Unidirectional WDM Transparent Self Healing Ring in a Field Environment”, pp. 392-393, IEEE 1997.
Shiozawa et al., “Demand Assign Wavelength Division Multiple Access (DA-WDMA) Hybrid Optical Loca Area Network Using Optical Add-Drop Multiplexers”, IEICE Trans. Commun., vol. E77-B, No. 2, Feb. 1994, pp184-189.
Bello Agustin
Chan Jason
Tejwani Manu J.
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