Optical Review

, Volume 11, Issue 2, pp 119–125 | Cite as

Design of Header Recognition Filter for Binary Phase Shift Keying in Header Recognition Unit using Time-Space Conversion

  • Hideaki FurukawaEmail author
  • Tsuyoshi Konishi
  • Yoshinori Oshita
  • Wanji Yu
  • Kazuyoshi Itoh
  • Yoshiki Ichioka
Regular Papers


Optical header recognition is one key function that enables ultrafast optical routing in photonic packet-switched networks. Especially, optical header recognition based on optical correlation processing has attracted much attention. Header signals using optical codes are decoded using optical correlation processing. We improve the decoding method for Binary Phase Shift Keying (BPSK) header signals in order to suppress crosstalk caused by matched filtering in the header recognition unit. We design a header recognition filter using the technique of a multiple-object discriminant filter (MODF). Results of preliminary experiments show that the designed header recognition filter can suppress crosstalk. The intensity ratio of correlation signals of a target header signal to non-target ones is higher than 1.95 : 1 in case of 4-bits BPSK header signals.

Key words

optical correlation optical header recognition time-space conversion multiple-object discriminant filter binary phase shift keying (BPSK) optical pulse code optical decoding 


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Copyright information

© The Optical Society of Japan 2004

Authors and Affiliations

  • Hideaki Furukawa
    • 1
    Email author
  • Tsuyoshi Konishi
    • 1
  • Yoshinori Oshita
    • 1
  • Wanji Yu
    • 2
  • Kazuyoshi Itoh
    • 1
  • Yoshiki Ichioka
    • 3
  1. 1.Graduate School of EngineeringOsaka UniversitySuita, OsakaJapan
  2. 2.Osaka Science and Technology CenterOsakaJapan
  3. 3.Nara National College of TechnologyNaraJapan

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