DocumentCode :
900899
Title :
Multiple-Input-Buffer and Shared-Buffer Architectures for Optical Packet- and Burst-Switching Networks
Author :
Yiannopoulos, Konstantinos ; Vlachos, Kyriakos G. ; Varvarigos, Emmanouel
Author_Institution :
Univ. of Patras, Patras
Volume :
25
Issue :
6
fYear :
2007
fDate :
6/1/2007 12:00:00 AM
Firstpage :
1379
Lastpage :
1389
Abstract :
We present an architecture for implementing optical buffers, based on the feed-forward-buffer concept, that can truly emulate input queuing and accommodate asynchronous packet and burst operation. The architecture uses wavelength converters and fixed-length delay lines that are combined to form either a multiple-input buffer or a shared buffer. Both architectures are modular, allowing the expansion of the buffer at a cost that grows logarithmically with the buffer depth, where the cost is measured in terms of the number of switching elements, and wavelength converters are employed. The architectural design also provides a tradeoff between the number of wavelength converters and their tunability. The buffer architectures proposed are complemented with scheduling algorithms that can guarantee lossless communication and are evaluated using physical-layer simulations to obtain their performance in terms of bit-error rate and achievable buffer size.
Keywords :
error statistics; optical burst switching; optical fibre networks; packet switching; queueing theory; asynchronous packet; bit-error rate; burst-switching networks; feed-forward-buffer; lossless communication; multiple-input-buffer architectures; optical buffers; optical packet-switching networks; physical-layer simulations; shared-buffer architectures; switching elements; wavelength converters; Bit error rate; Communication switching; Costs; Delay lines; Optical buffering; Optical fiber networks; Optical wavelength conversion; Performance loss; Scheduling algorithm; Wavelength measurement; Input queuing; optical buffers; optical packet and burst switching; programmable delays; wavelength converters;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2007.896804
Filename :
4232526
Link To Document :
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