High-speed optical interconnect coupler based on soft lithography ribbons

Angel Flores, Sangyup Song, Jame J. Yang, Zhinqiang Liu, Michael R. Wang

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


In this paper, high-speed optical ribbon couplers for card-to-backplane interconnect applications are presented. The ribbon couplers are based on evanescent coupling between flexible multimode waveguide arrays. A soft lithographic technique is utilized to fabricate the ribbons. A flexible nonterminating optical data bus has been developed. Using BeamPROP software, we simulated the evanescent light coupling between two closely spaced ribbon waveguides to study the effects of waveguides separation, interaction length, and misalignment on coupling efficiency. Further experimental analysis and tests have been performed to quantify these effects. To investigate data transmission performance, a 12-channel optical interconnect link has been assembled. Experimental results demonstrated successful evanescent coupling; facilitating auto alignment coupling between card and backplane ribbon waveguides at data speeds as high as 10 Gb/s per channel. The evident high-speed interconnect performance and rapid ribbon prototyping approach can result in overall lower cost coupler fabrication for prospective optical interconnect applications.

Original languageEnglish (US)
Pages (from-to)1956-1963
Number of pages8
JournalJournal of Lightwave Technology
Issue number13
StatePublished - 2008


  • Computing system
  • Evanescent coupling
  • Optical interconnection
  • Waveguide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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