Optical networks and the related technologies, network management software and services
have undergone remarkable developments, and such networks are now the ultra-high …

In this paper, we present a polynomial time algorithm that gives an optimal solution to the
routing and wavelength assignment (RWA) problem in a tree topology. One of the major …

Wavelength Division Multiplexing (WDM) is a technology which multiplexes optical carrier
signals on a single optical fiber by using different wavelengths. Lightwave networks based …

We address a problem of finding an optimal node placement that minimizes the amount of
traffics by reducing the weighted hop distances in multihop lightwave networks. The problem …

We consider a problem of finding an optimal node placement that minimizes the amount of
traffic by reducing the weighted hop distances in multihop networks. The problem is called …

We consider a problem of finding an optimal node placement that minimizes the amount of
traffic by reducing the weighted hop distances in multihop networks. The problem is called …

Finite model theory, as understood here, is an area of mathematical logic that has
developed in close connection with applications to computer science, in particular the theory …

波長分割多重 (WDM) 技術とは, 1 本の光ファイバ上に波長の異なる複数の光信号を並列的に伝送
することで, 光ファイバを増設することなく高速かつ大容量の通信を実現する技術である. WDM …