The traffic grooming problem in optical networks has been extensively studied. It tackles the
problem of aggregating sub-wavelength traffic onto optical lightpaths so that the network …

The traffic grooming problem is of high practical importance in emerging wide-area
wavelength division multiplexing (WDM) optical networks, yet it is intractable for any but …

We consider a hierarchical approach for traffic grooming in large multiwavelength networks
of a general topology. Inspired by similar concepts in the airline industry, we decompose the …

We revisit the classical spectrum allocation (SA) problem, a fundamental subproblem in
optical network design, and make three contributions. First, we show how some SA problem …

With the growing popularity of multicast applications and the recognition of the potential of
achievable efficiency gain of traffic grooming, we face the challenge of optimizing the design …

The continuous growth of broadband communications, multimedia services and Internet is
absolutely related to the deployment and operation of optical networks. Despite optical …

The possibility of adding multi protocol label switching (MPLS) support to transport networks
is considered an important opportunity by telecom carriers that want to add packet services …

The imperative need for unconditional secure key exchange is expounded by the increasing
connectivity of networks and by the increasing number and level of sophistication of …

In wavelength routed optical networks, the number of wavelength channels is limited due to
several constraints and each wavelength as well as each lightpath support traffic in the Gbps …

The bandwidth of a wavelength channel in WDM optical networks is very high compared to
the user's requirements for various applications. Therefore, there is a scope for better …