Optical Burst Switching (OBS) is an experimental network technology that enables the construction of very high capacity routers, using optical data paths and electronic control. In this paper, we study two designs for wavelength converting switches that are suitable for use in optical burst switching systems and evaluate their performance. Both designs use tunable lasers to implement wavelength...

In this paper, the optical composite burst switching (OCBS) technique is proposed to be implemented in an all-optical backbone network to support Internet protocol (IP) traffic. The OCBS is based on two main features. First, several IP packets are assembled in a single macropacket, called burst. Second, the burst contention in an optical switch is handled by means of two techniques, the wavelen...

Introduction: Requirements of the physical layer in a photonic switching network include a high channel bandwidth for the throughput of ultra-high bandwidth signals, fast switching speeds and optical processing of switching control algorithms to remove the speed bottleneck imposed by electronic processing. Integrated-optic waveguide switches offer a channel bandwidth comparable to that of the f...

We solve the coupled mode equations governing the chalcogenide nonlinear fiber Bragg gratings (FBGs) numerically, and obtain the bistability characteristics. The characteristics of the chalcogenide nonlinear FBGs such as: switching threshold intensity, bistability interval and on-off switching ratio are studied. The effects of FBG length and its third order nonlinear refractive index on FBG cha...

Transparent optical nodes (TONs), such as all-optical switches and erbium-doped fiber amplifiers, are an increasingly important part of wavelength-division multiplexed (WDM) networks. Our goal in this paper is to consider how quality of service (QoS) may be monitored at such TONs. The question is particularly important as access to WDM networks, and associated security concerns, increase. Our p...

Integrated optics and Optical computing are now a mature technology offering many types of devices and manufacturing techniques. Recent breakthroughs in the field of silicon photonics showed low-loss insulators, passive wave guide devices, high speed optical switches, detectors, silicon lasers, and silicon amplifiers, optical amplifiers etc. These devices have provided the possibility to constr...

We present a sub-millisecond dynamic optical path set up scheme for the multi-mode switching router. In particular, we have implemented the proposed integrated multi-mode scheduler in FPGA hardware in an optical switching testbed, and have demonstrated application triggered real-time sub-millisecond optical path setup. Another key contribution is that the proposed approach brings out the practi...

Integrated photonics offers the possibility of compact, low energy, bandwidth-dense interconnects for large port count spatial optical switches, facilitating flexible and energy efficient data movement in future data communications systems. To achieve widespread adoption, intimate integration with electronics has to be possible, requiring switch design using standard microelectronic foundry pro...

Ultra-high speed OTDM networks require stable and compact all optical switches for demultiplexing and routing. In this paper we investigate the noise and crosstalk characteristics of all optical symmetric Mach-Zehnder (SMZ) switch using a numerical model. Two effects, the relative intensity noise (RIN) and channel crosstalk (CXT) that degrade the performance of the switch are investigated. Nume...

Micromirrors fabricated by MEMS technology have demonstrated to be important sensing or actuating components in many industrial and biomedical applications such as laser scanning displays, optical switch matrices, and biomedical imaging systems.Micromirrors fabricated by MEMS technology have demonstrated to be important sensing or actuating components in many industrial and biomedical applicati...