Optical packet switching

Details Optical packet switching Optical packet switching

2007-07-17

2007-07-17

Singh, Dalzid (Department: 2613)

Optical communications

Multiplex

Optical switching

C398S054000

Reexamination Certificate

active

11227593

ABSTRACT:
Optical Packet Switching (OPS) is considered the most desirable switching technology for the ubiquitous optical networks that carry internet traffic. OPS could provide for great flexibility, capacity, efficiency, and bandwidth utilization that current switching strategies are not capable of providing. Despite its great appeal, OPS has been hampered by some major hurdles that prevented its practical implementation. Among such hurdles are optical buffering, optical processing/update of headers and to a lesser extent synchronization. This document introduces a novel technique for implementing packet switching in the optical domain. The new approach makes it possible to find efficient and cost effective solutions to the major problems that traditionally rendered optical packet switching (OPS) impractical. The new approach is applicable to any network topology. A complete suite of solutions to all aspects of optical packet switching that take full advantage of the basic novel approach are described. We present a complete set of solutions to the issues of buffering, header processing/update, regeneration, and synchronization among others. The new approach and affiliated solutions make it possible to implement OPS directly over WDM thus offering a very flexible optical layer capable of meeting future demand in a cost effective way.

REFERENCES:
patent: 4970717 (1990-11-01), Haas
patent: 2004/0190845 (2004-09-01), Chen

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