Wavelength bypassed ring networks

Details Wavelength bypassed ring networks Wavelength bypassed ring networks

1996-10-10

1998-05-12

Negash, Kinfe-Michael

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359128, 359110, 370222, H04B 1020, H04J 1400

Patent

active

057514542

ABSTRACT:
The invention is directed to the use of wavelength channels to bypass nodes in ring networks. For networks with a small number of nodes, direct node to node routes are provided without changing the physical layout of the fibre in the ring. Architectures providing complete transparent interconnections with extra capacity for heavily used routes on a portion of the ring are disclosed. For networks with a large number of nodes, underconnected networks provide a number of accelerated, direct routes between some of the nodes. Proposed architectures for underconnected networks and methods for self-routing the traffic are also provided.

REFERENCES:
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patent: 5548431 (1996-08-01), Shin et al.
patent: 5647035 (1997-07-01), Cadeddu et al.
"Dense Wavelength Division Multiplexing Networks", C.A. Brackett, IEEE Journal on Selected Areas in Communications, vol. 8, No. 6, 1990, pp. 948-964.
"Terabit Lightwave Networks: Multihop Approach", A.S. Acampora et al., AT&T Technical Journal, Nov.-Dec. 1987, pp. 21-34.
The Lambdanet Multiwavelength Network: Architecture, Applications and Demonstrations, M. Goodman et al., IEEE Journal on Selected Areas in Communications, vol. 8, No. 6, 1990, pp. 995-1004.
"Performance Analysis of Multihop Lightwave Networks with Hot Potato Routing and Distance-Age Priorities", Z. Zhang et al., IEEE Transactions on Communications, vol. 42, No. 8, Aug. 1994, pp. 2571-2581.

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