The increasing volume and ratio of packet switched traffic poses new challenges on optical transmission technology applied in telecommunications networks. Retaining efficient operation of networks under the changing traffic load calls for development of new solutions. The paper focuses on two research directions of increasing importance: Optical Burst Switching (OBS) and Optical Packet Switchin...

In this paper; we propose an event-driven simulation based approach to estimate the worst case I R drop and Ldildt inductive noise on the power supply network. The switching noise is modeled as a weighted sum of the switching currents and the rates of change of the switching currents, where the weights are respectively the effective resistance and inductance (on the P/G network) experienced by ...

We design and implement an optical slot switching network for bulk content transfer. To realize the slot switching network, we employ the generalized multiprotocol label switching (GMPLS) extension protocol to reserve and release slots dynamically according to the application. We use optical switches as relay points in the slot switching network, and we employ a 10 ns highspeed Pb,La Zr,Ti O3 (...

Absfrncf We propose a scheme for expanding switch modules to form a larger switch using the so-called focnl switching obtained by allowing bidirectional connection to the conventional three-stage Clos network switch. The performance of the proposed expansion architecture was compared to that of the conventional three-stage Clos network. We simulated 32x32 switching systems using two expansion a...

Most of the initial efforts to utilize Generalized MPLS (GMPLS) have been related to environments hosting devices with a single switching capability. The complexity raised by the control of such data planes is similar to that seen in classical IP/MPLS networks. By extending MPLS to support multiple switching technologies, GMPLS provides a comprehensive framework for the control of a multi-layer...

A heteroclinic network for an equivariant ordinary differential equation is called switching if each sequence of heteroclinic trajectories in it is shadowed by a nearby trajectory. It is called forward switching if this holds for positive trajectories. We provide an elementary example of a switching robust homoclinic network and a related example of a forward switching asymptotically stable rob...

In this paper, we introduce abstract algebraic analysis of the topological structure of a banyan network, which has become the baseline for most switching networks. The analysis provides the following key results: (1) The switching elements of a switching stage are arranged in order, that is, each stage of a banyan network consists of a series of a cyclic group. (2) The links between switching ...

A three-dimensional multi-stage optical interconnection network is proposed for mussively purullel processors. The interconnection network employs beamsteering vertical cavity surface-emitting lasers FCSEL) as space-division switching elements, and micromachined micro-Fresnel lenses as free-space optical elements. The entire switching network is integrated on a Si chip using the free-space micr...

The Passive Optical Network (PON) shares transmission facilities to provide broadband services economically. To enhance network survivability, ITU-T Rec. G.983.5 defines some protection switching methods. These methods, however, always bring about signal loss when switching is performed. Moreover, a network operator often has to replace one optical fiber cable with another that takes a differen...