This paper develops both exact and approximate models for the analysis of an all-optical packet switch based on a fiber-loop buffer memory (FLBM). The switch structure and operation is based on the fully shared buffer architecture of the Research and Development in Advanced Communications in Europe—ATM Optical Switching (RACE-ATMOS) project [1], which uses individual wavelengths to store fixed-...

In a network, multiple links are interconnected by means of switches. A switch is a device with multiple input and output links, and its job is to move data from the input links to the output links. In this thesis, we focus on a number of fundamental issues concerning the quality of service provided by electronic and optical switches. We discuss various mechanisms that enable the support of qua...

Digital optical logic circuits capable of performing bit-wise signal processing are critical building blocks for the realization of future high-speed packet-switched networks. In this paper, we present recent advances in all-optical processing circuits and examine the potential of their integration into a system environment. On this concept, we demonstrate serial all-optical Boolean AND/XOR log...

A photonic fast packet switch is proposed for low-latency intra-node routing in high-speed optical networks. Applications are demonstrated in telecommunication and parallel computer environments. The switch fabric is based on integrated directional-coupler technology. It has low complexity and is geometrically suitable for realestate e cient single substrate implementation. The switching archit...

A new architecture is proposed for a WDM Optical Packet Switch which allows an easier realization than classical shared per node architecture by introducing a new sharing per wavelength strategy. This sharing strategy is naturally driven by the use of FixedInput/Tunable-Output Wavelength Converters. An upper bound for the Packet Loss Probability is found by implementing a classical occupancy pr...

A novel architecture is proposed for future multi-terabit Internet Protocol routers, employing multiple cascaded stages of optical switching and buffering. External synchronization is not required, and a void-filling algorithm simplifies hardware requirements.

Photochromic compounds are promising materials for optoelectronic and photonic applications because of their ability to undergo change in color under UV/Vis illumination due to reversible chemical transition from open to closed ring isomers (photocyclization). The by-produc formation may lead to irreversible photodegradation of the material, called fatigue. We use Density Functional Theory meth...

of the thesis presented to the Senate of Universiti Putra Malaysia in partial fulfilment of the requirements for the degree of Master of Science OPTICAL PACKET SWITCHING CONTENTION RESOLUTION BASED ON A HYBRID WAVELENGTH CONVERSION-FIBER DELAY LINE SCHEME By GO YUN II November 2004 Chairman : Sabira Khatun, Ph.D. Faculty : Engineering Due to the convergence of computer communication and telecom...

We investigate a photonic packet switch architecture that enables a high node throughput and provides priority services. We describe PBSO (partial buffer sharing with overwriting) method that allows control of an optical fiber-delay-line buffer by prioritized buffer management under conditions of synchronous arrival of fixed length optical packets at a packet switch. The PBSO method is based on...

SEED (self-electrooptic effect device) configuration, symmetric(S) SEED switching characteristics, a single all-optical memory cell, and the packet switch structure are briefly introduced. By applying a planar integrated optical circuit based on SEEDs, the demonstration of an all-optical memory cell, which can be used in optical switching and optical data storing is introduced by using master-s...