Title :
Photonic Label Recognition by Time-Space Conversion and 2-D Spatial Filtering With Delay Compensation
Author :
Tsunematsu, Hiroomi ; Arima, Toshihiro ; Goto, Nobuo ; Yanagiya, Shin-ichiro
Author_Institution :
Dept. of Opt. Sci. & Technol., Univ. of Tokushima, Tokushima, Japan
fDate :
7/15/2009 12:00:00 AM
Abstract :
An optical-label recognition system using time-to-space conversion, spatial Vander-Lugt 2-D correlation, and postprocessing with a slit and a delay compensator is proposed. The postprocessing, with the narrow slit and a prism for the time-delay compensation, makes it possible to distinguish the labels, consisting of a time series of optical pulses. For 4-b binary phase-shift-keying labels at 160 Gb/s, eight different labels are proved to be distinguished by the computer simulation. The contrast ratio of autocorrelation to cross-correlation is 1.61 and 2.5 without and with time gating, respectively.
Keywords :
compensation; optical communication; phase shift keying; spatial filters; telecommunication network routing; 2-D spatial filtering; 4-b binary phase shift keying; delay compensation; photonic label recognition; spatial Vander-Lugt 2-D correlation; time-space conversion; Delay; Filtering; Gratings; High speed optical techniques; Holographic optical components; Holography; Lenses; Optical filters; Optical pulses; Routing; 2-D filter; Delay compensation; Vander–Lugt correlation; optical-label recognition; time-to-space conversion;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2014973
