In this paper, we present a reliable WDM (Wavelength-Division Multiplexing) multicast protocol in optical burst-switched (OBS) networks. Since the burst dropping (loss) probability may be potentially high in a heavily loaded OBS backbone network, reliable multicast protocols that have developed for IP networks at the transport (or application) layer may incur heavy overheads such as a large num...

Several regular topologies have been proposed to be used as the logical topology for WDM networks. These topologies are usually evaluated and compared based on the metrics related to network performance. It can be simply shown that this is generally not sufficient since better network performance can be achieved by increasing more network facilities. However, doing this eventually increases the...

For the next generation optical internet to meet the growing traffic needs WDM technology is the key issue to realize high capacity networking infrastructure. In this paper an efficient algorithm is implemented for circuit switching in wide area networks. This algorithm known as semelightpath algorithm has been applied to ARPANET and NSFNET to estimate the blocking probability of a call via ful...

analysis requires the separate enumeration of the occupancy for every wavelength on every link used by multiple alternate routes for a single source-destination pair. In a network with F wavelengths per link, and with m links used by multiple alternate routes for a given source-destination pair, the calculation time required is exponential with the product of the number of wavelengths and numbe...

In this paper, we extend design based routing (DBR), which is originally proposed for opaque wavelength division multiplexing (WDM) networks without waveband switching (WBS), to transparent WDM networks with WBS. We formulate and solve the corresponding integer linear programming (ILP) problems to facilitate the use of DBR for transparent WDM networks with WBS, referred to as DBR with Waveband ...

This paper introduces various techniques for a new fronthaul network segment applied in centralized radio access networks (C-RAN) architecture. The promising fronthaul interfaces are described which are considered to meet physical requirements for the fronthaul network segment and to build a new radio access network solution. Various optical solutions including CPRI (Common Public Radio Interfa...

This contribution concentrates on dynamic routing in WDM (Wavelength Division Multiplexing) networks. It is shown that a strategy based on precalculated alternatives and an adaptive dynamic path search performs very well over a wide load range. Moreover, specific effects for the impact of resource allocation strategies in photonic WDM networks are highlighted, especially the influence of wavele...

We analyze how network throughput degrades in three MAN rings, SONET/SDH, packet-switched, and WDM, following a failure/restoration. For the same ring capacity, WDM rings offer the best network throughput before and after a link failure/restoration.  2001 Optical Society of America OCIS codes: 060.4250 (Networks)

RECEIVED 16 JUNE 2005; REVISED 17 SEPTEMBER 2005; ACCEPTED 26 SEPTEMBER 2005; PUBLISHED 27 OCTOBER 2005 The passive optical network (PON) is an optical fiber based network architecture, which can provide much higher bandwidth in the access network compared to traditional copper-based networks. Incorporating wavelength-division multiplexing (WDM) in a PON allows one to support much higher bandwi...