An Optical Wavelength-Routed Multicast Packet Switch Based on Multitimeslot Multiwavelength Conversion

High-Speed Multicast Scheduling for All-Optical Packet Switches

“…On one hand, M-FDLs does not have the problem of limited multicast processing capability in the recirculating loop buffer in the wavelength-assisted routing scheme [1], [11], since it can be shared by all the incoming multicast packets in a pipelined fashion. On the other hand, M-FDLs uses much less FDL segments compared to the output buffer used in the output buffering scheme [10].…”

“…During the past few years, as driven by the increasing multicast applications requiring highbandwidth transmission from one source to multiple destinations, such as video conference, video-on-demand (VoD) and IP-based Television (IPTV), optical multicast packet switching has attracted much research effort. A series of all-optical switching architectures and techniques have been proposed to support multicast at the switch/router level, such as wavelength-assisted switching [1], [11], Broadcastand-Select (BS) switching [7], etc. Despite of the considerable amount of work on multicast-capable optical packet switching architectures, however, relatively little attention has been paid to multicast scheduling in such switches, which is critical for high-speed all-optical packet switches.…”

“…Several multicast scheduling schemes using FDLs as buffer have been proposed [10], [1], [11]. One commonly used multicast scheduling scheme is wavelength-assisted routing [1], [11], in which multicast packets are sent to multicast modules, a FDL loop device is used to generate copies of the packet and provide necessary delay.…”

“…One commonly used multicast scheduling scheme is wavelength-assisted routing [1], [11], in which multicast packets are sent to multicast modules, a FDL loop device is used to generate copies of the packet and provide necessary delay. However, wavelength-assisted routing schemes are generally quite complex and provide only limited multicasting ability, as each multicast module cannot be shared by multiple packets simultaneously.…”

All-optical broadcast technology based on aluminum-doped highly nonlinear fiber

“…Since optical fibers possess advantages such as transmission bandwidth, low transmission loss, anti-interference ability, and other characteristics, optical communication 1,2 technology has gained in popularity in the communications infrastructure. Optic-electric-optic (O/E/O) conversion is a result of its development.…”