DocumentCode :
816208
Title :
Synchronization of a network element for optical packet switching using optical correlators and wavelength shifting
Author :
Cardakli, M.C. ; Willner, A.E.
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Volume :
14
Issue :
9
fYear :
2002
Firstpage :
1375
Lastpage :
1377
Abstract :
The authors demonstrate packet and bit synchronization of an optical switching node to an incoming packet stream. Their module synchronizes to packets with only four preamble bits and employs fiber Bragg gratings as continuous optical correlators and cross-gain modulation of an semiconductor optical amplifier as a wavelength shifter to determine the start of a packet. They use this optical technique to recognize the arrival of 2.5-Gb/s data packets and to route them to one of two outputs of an optical switch in a reconfigurable network. Penalty-free switching with a 1.6-ns guard time is achieved.
Keywords :
Bragg gratings; optical correlation; optical wavelength conversion; packet switching; photonic switching systems; semiconductor optical amplifiers; synchronisation; 2.5 Gbit/s; bit synchronization; continuous correlators; cross-gain modulation; fiber Bragg gratings; next-generation optical networks; optical correlation; optical packet switching; optical switching node; output trigger pulse synchronization; packet synchronization; penalty-free switching; reconfigurable network; semiconductor optical amplifier; tunable search pattern; wavelength shifting; wavelength-dependent time delays; Correlators; Fiber nonlinear optics; High speed optical techniques; Nonlinear optics; Optical crosstalk; Optical fiber networks; Optical modulation; Optical packet switching; Packet switching; Stimulated emission;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2002.801085
Filename :
1032385
Link To Document :
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