Optimization of Two-Dimensional Filter in Time-to-Space Converted Correlator for Optical BPSK Label Recognition Using Genetic Algorithms

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  • KAMITANI Naohide
    Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima
  • KISHIKAWA Hiroki
    Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima
  • GOTO Nobuo
    Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima
  • YANAGIYA Shin-ichiro
    Department of Optical Science and Technology, Faculty of Engineering, The University of Tokushima

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A two-dimensional filter for photonic label recognition system using time-to-space conversion and delay compensation was designed using Genetic-Algorithms (GA). For four-bit Binary Phase Shift Keying (BPSK) labels at 160Gbit/s, contrast ratio of the output for eight different labels was improved by optimization of two-dimentional filtering. The contrast ratio of auto-correlation to cross-correlation larger than 2.16 was obtained by computer simulation. This value is 22% larger than the value of 1.77 with the previously reported system using matched filters.

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