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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 60–69

Low-cost board-to-board optical interconnects using molded polymer waveguide with 45 degree mirrors and inkjet-printed micro-lenses as proximity vertical coupler

Xiaohui Lin, Amir Hosseini, Xinyuan Dou, Harish Subbaraman, and Ray T. Chen  »View Author Affiliations

Optics Express, Vol. 21, Issue 1, pp. 60-69 (2013)

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We demonstrate intra- and inter-board level optical interconnects using polymer waveguides and waveguide couplers consisting of both 45 degree total internal reflection (TIR) mirrors and inkjet-printed micro-lenses. Surface normal couplers consisting of 50 µm × 50 µm waveguides with embedded 45 degree mirrors are fabricated using a nickel mold imprint. Micro-lenses, 70 µm in diameter, are inkjet-printed on top of the mirrors. We characterize the optical transmission between waveguides located on different boards in terms of insertion loss, mirror coupling loss, and free space propagation loss as a function of interconnection distance in free space. Each mirror contributes 1.88 dB loss to the system, corresponding to 65% efficiency. The printed micro-lenses improve the transmission by 2-4 dB (per coupler). Data transmission at 10 Gbps reveals that inter-board interconnects has a bit error rate (BER) of 1.1 × 10−10 and 6.2 × 10−13 without and with the micro-lenses, respectively.

© 2013 OSA

OCIS Codes
(200.4650) Optics in computing : Optical interconnects
(220.3630) Optical design and fabrication : Lenses
(130.5460) Integrated optics : Polymer waveguides

ToC Category:
Integrated Optics

Original Manuscript: September 26, 2012
Revised Manuscript: December 14, 2012
Manuscript Accepted: December 15, 2012
Published: January 2, 2013

Xiaohui Lin, Amir Hosseini, Xinyuan Dou, Harish Subbaraman, and Ray T. Chen, "Low-cost board-to-board optical interconnects using molded polymer waveguide with 45 degree mirrors and inkjet-printed micro-lenses as proximity vertical coupler," Opt. Express 21, 60-69 (2013)

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