"The right architecture is to route a wavelength [of light] all the way through the network straight into the desktop," says Harry Bosco, who runs Lucent's optical networking division.
However, the increasing unpredictability of traffic demand and the emergence of bandwidth-hungry applications such as video on demand have recently turned the industry's focus to dynamic, reconfigurable optical networks based on reconfigurable optical add/drop multiplexers (ROADMs) to route different wavelength channels.
49 (20012001) 341 350], we study the problem of assigning routes and wavelengths to the multicast sessions so as to minimize electronic copying.
In this paper we consider the problem where we need to assign a route and a wavelength to each traffic stream, minimizing the total number of used SONET ADMs.
In this work we treat the Routing and Wavelength Assignment (RWA) with focus on minimizing the number of wavelengths to route demand requests.
In this paper, we study the waveband routing and wavelength assignment (WRWA) tasks in hybrid hierarchical wavelength division multiplexing (WDM) networks with optical crossconnects that can route multiple granularity (wavelengths and wavebands) at the same time.
Since optical WDM networks are becoming one of the alternatives for building up backbones, dynamic routing, and wavelength assignment with delay constraints (DRWA-DC) in WDM networks with sparse wavelength conversions is important for a communication model to route requests subject to delay bounds.
Waveband merging technology, which groups several wavelength routes into a single waveband tunnel with at least two hops, could perform port-cost savings by reducing the size and cost of OXC since switching one waveband in the All Optical (OOO) domain only consumes two ports at each bypass node.
Particularly, the proposed rerouting strategy is built upon two main pillars, namely wavelength reassignment and route deviation.
In a WDM network, routing a request consists in assigning it a route in the physical network and a wavelength.
