Hybrid free-space optical bus system for board-to-board interconnections

Jang Hun Yeh, Raymond K. Kostuk, Kun Yii Tu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


A free-space optical bus system is described for board-to-board interconnections at the backplane level. The system uses active optoelectronic modules as the interface between the circuit boards and the electrical backplane. Substrate-mode holograms are used to implement signal broadcast operations between boards, and each board on the backplane shares common free-space channels for transmitting and receiving signals. System-design considerations are given, and the potential performance of the optical bus system is evaluated. An experimental demonstration is also presented for the signal broadcast operation through cascaded substrate-mode holograms at a data rate of 622 Mb/s.

Original languageEnglish (US)
Pages (from-to)6354-6364
Number of pages11
JournalApplied optics
Issue number32
StatePublished - Nov 10 1996


  • Holograms
  • Optical bus
  • Optical interconnections

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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