|
This thesis investigates a novel WDM network - the Multiwave-
length Multifiber Regular Grid Network (MMRGN) which combines
space and wavelength divisions to construct a multihop multi-
wavelength network. In the network, a total number of MxN nodes
are arranged as an MxN matrix. A cable consisting of N fibers
is employed to connect N nodes in each row of the matrix and M
fibers in each column. N wavelengths are used in each row in a
way that full mesh connection among nodes is built. The same
situation occurs in each column except that N is replaced by M.
The proposed approach has the same physical and logical
topology and can be implemented easily. It reduces the
wavelength requirement among N nodes from N(N-1) to N comparing
to a full wavelength division approach. Moreover, each node
just has one transmitting wavelength only. The network has high
throughput and has a mean hop number less than two. Packets can
always be delivered immediately without competing the right for
transmission and thus reduces the transmission latency.
Protection against link failures is achieved by diverse routing
paths, which improves network survivability and enhances packet
reachability.
|