Abstract
An ultra-low latency, high throughput internet protocol (IP) over
wavelength division multiplexing (WDM) packet switching technology for
next-generation internet (NGI) applications has been designed and
demonstrated. This method overcomes limitations of conventional optical packet
switching,which require buffering of packets and synchronization of bits, and
optical burst switching methods that require estimation of delays at each node
and for each path. An optical label switching technique was developed to
realize flexible bandwidth-on-demand packet transport on a reconfigurable WDM
network. The aim was to design a network with simplified protocol stacks,
scalability,and data transparency. This network will enable the NGI users to
send their data applications at gigabit/second access speed with low and
predictable latency (< 1 µsec per switch node), with a system
capacity of beyond multi-Tb/s. Packet forwarding utilizes WDM optical headers
that are carried in-band on the same wavelength and modulated out-of-band in
the frequency domain.
© 2000 IEEE
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