In packet switched optical network, packet header extraction and processing in alloptical domain is a challenging task. In this paper we propose a new all-optical header extraction scheme based on the versatile all-optical ultrafast symmetric Mach-Zehnder (SMZ) switch and pulse position modulation (PPM) for 80 Gb/s data rate. In SMZ switches, the residual power residing outside the switching wi...

The service evolution and the rapid increase in traffic levels fuel the interest toward switching paradigms enabling the fast allocation of Wavelength Division Multiplexing WDM channels in an on demand fashion with fine granularities (microsecond scales). For this reason, in the last years, different optical switching paradigms have been proposed (Sabella et al., 2000): optical-packet switching...

Our work is motivated by the desire to build a very high speed packet-switch with extremely high line-rates. In this paper, we consider building a packet-switch from multiple, lower speed packet-switches operating independently and in parallel. In particular, we consider a (perhaps obvious) parallel packet switch (PPS) architecture in which arriving traffic is demultiplexed over identical, lowe...

Our work is motivated by the desire to build a very high speed packet-switch with extremely high line-rates. In this paper, we consider building a packet-switch from multiple, lower speed packet-switches operating independently and in parallel. In particular, we consider a (perhaps obvious) parallel packet switch (PPS) architecture in which arriving traffic is demultiplexed over identical, lowe...

We propose a new multiwavelength almost all-optical switch architecture called the -scheduler that uses wavelength division multiplexing (WDM) internally to fold the switch architecture in both the space and time domains to reduce the hardware complexity and to improve the signal characteristics through the switch. The -scheduler preserves the packet order for a given input–output pair, is cons...

Introduction: All-optical packet switching networks [1] are becoming the solution of fast-growing telecommunication with the advantages of scalability and efficiency by reducing O=E=O conversion and higher available data rate beyond current electronic routing technologies. To ease the design of the key component, the optical packet switch, the incoming packets need to be aligned to a common tim...

A small footprint integrated Membrane InP Switch (MIPS) on Silicon-On-Insulator (SOI) is demonstrated for use in all-optical packet switching. The device consists of an optically pumped III-V membrane waveguide of only 100 nm thick, coupled to the underlying SOI waveguide circuit. Because of its limited thickness, the optical confinement in the active layers is maximized, allowing for high exti...

Different switching techniques have been proposed to design optical switch architectures. Wave Division Multiplexing (WDM) techniques were extensively investigated to implement switching. Code Division Multiple Access (CDMA) permits multiple users to access bandwidth simultaneously and asynchronously via spread spectrum. This paper presents a non-blocking multiprotocol switch architecture based...

A parallel packet switch (PPS) is a switch in which the memories run slower than the line rate. Arriving packets are spread (or load-balanced) packet-by-packet over multiple slower-speed packet switches. It is already known that with a speedup of , a PPS can theoretically mimic a FCFS output-queued (OQ) switch. However, the theory relies on a centralized packet scheduling algorithm that is esse...

The WASPNET project proposed a packet sequence criterion to preserve end-to-end packet order in Optical Packet Switching (OPS) networks controlled by the Scattered Wavelength Path (SCWP) operational mode. This paper shows that this packet ordering methodology causes performance impairments, related to unbalanced wavelength usage in fiber links. This skewed usage is inherent to the WASPNET seque...