Title
Emulation of an Optical Flexible Delay Line by Parallel Variable Optical Delay Lines
Abstract
In this letter, we consider the discrete-time setting and propose a construction of an optical flexible delay line by parallel variable optical delay lines (VODLs) under a very simple packet routing scheme. We show that to exactly emulate an optical flexible delay line with maximum delay d (time slots), where d is a positive integer, it is necessary and sufficient to have at least [(2d+1)/3] VODLs with maximum delay d (time slots) in our proposed architecture. We also show that under a uniform traffic model, the average number of busy VODLs is approximately d+1-(2d+1)(d/(d+1))d, which is quite close to our simulation result. Through simulations, we further show that if we can tolerate a loss probability of, say 10-3, then we only need at most 1.7 times of the average number of busy VODLs, which is much smaller than the worst-case bound [(2d+1)/3].
Year
DOI
Venue
2010
10.1109/LCOMM.2010.08.100464
IEEE Communications Letters
Keywords
Field
DocType
Delay lines,Emulation,Optical buffering,Optical packet switching,Delay effects,Routing,Optical switches,Optical fiber networks,Optical design,Traffic control
Integer,Telecommunications network,Optical switch,Computer science,Computer network,Traffic model,Real-time computing,Packet routing,Emulation,Packet switching,Discrete time and continuous time
Journal
Volume
Issue
ISSN
14
8
1089-7798
Citations 
PageRank 
References 
4
0.42
1
Authors
5
Name
Order
Citations
PageRank
Duan-Shin Lee167071.00
Cheng-Shang Chang22392246.97
Jay Cheng3101.66
Hung-Shih Chueh441.09
Kuan-Ting` Wang540.42