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—As wavelength division multiplexing (WDM) technology matures and multicast applications become increasingly popular, supporting multicast at the WDM layer becomes an important and yet challenging topic. In this paper, we study constrained multicast routing in WDM networks with sparse light splitting, i.e., where some switches are incapable of splitting(More)
—In high-speed SONET rings with point-to-point WDM links, the cost of SONET add–drop multiplexers (S-ADMs) can be dominantly high. However, by grooming traffic (i.e., mul-tiplexing lower-rate streams) appropriately and using wavelength ADMs (WADMs), the number of S-ADMs can be dramatically reduced. In this paper, we propose optimal or near-optimal(More)
We propose an on-line wavelength assignment algorithm for multi-fiber WDM networks, in which lightpaths are established and released dynamically. For a given number of fibers per link and number of wavelengths per fiber, the algorithm aims to minimize the blocking probability. It may also be used to reduce the number of wavelengths required for a given(More)
Supporting WDM multicasting in an IP over WDM network poses interesting problems because some WDM switches may be incapable of switching an incoming signal to more than one output interface. An approach to WDM multicasting based on wavelength-routing, which constructs a multicast forest for each multicast session so that multicast-incapable WDM switches do(More)
| In high-speed SONET rings with point-to-point WDM links, the cost of SONET Add-Drop Multiplexers (S-ADMs) can be dominantly high. However, by grooming traac (i.e. multiplexing lower rate streams) appropriately and using wavelength ADMs (WADMs), the number of S-ADMs can be dramatically reduced. In this paper, we propose optimal or near-optimal algorithms(More)
—In this paper, we consider the problem of scheduling all-to-all personalized connections (AAPC) in WDM rings. Scheduling one connection for every source–destination pair in a network of limited connectivity provides a way to reduce routing control and guarantee throughput. For a given number of wavelengths K and a given number of transceivers per node T T(More)