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Compact Packaging of Optical and Electronic Components for On-Board Optical Interconnects

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Authors
Cho, Han-Seo; Chu, Kun-Mo; Kang, Sae-kyung; Huang, Sung-Hwan; Rho, Byung-Sup; Kim, Weon-Hyo; Kim, Joon-Sung; Kim, Jang-Joo; Kim, Hyo-Hoon
Issue Date
2005-02
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
IEEE Trans. Adv. Packag., vol. 28, no. 1, pp.114-120, Feb. 2005
Keywords
Flip-chip deviceshybrid integrated circuit bondingindiumoptical couplingoptical interconnectionsoptical polymerspackagingsimulation
Abstract
An optical interconnection plate was developed in order to achieve a compact and cost-effective interconnection module for an optical data link between chips on printed circuit boards. On the silica substrate, transmission lines and solder bumps are formed on the top surface of the substrate, and polymer waveguide array with 45 mirror planes is formed on the back side. This optical interconnection plate technique makes the alignment procedure quite simple and economical, because all the alignment steps between the optical components can be achieved in wafer processes and a high accuracy flip-chip bonding
technique. We confirmed the sufficiently high coupling efficiency and low optical crosstalk using the simplified experimental setup. Flip-chip bonding of the vertical-cavity surface-emitting laser and photodiode arrays on the top surface of the optical interconnection plate was performed using indium bumps in order to avoid thermal damage of the polymer waveguide. The fully packaged optical interconnection plate showed an optical data link at rates of 455 Mb/s. Improvement of the mirror surface roughness and the mirror angle accuracy could lead to an optical link at higher rates. In addition, the interconnection system can be easily constructed by inserting the optical interconnection plate between the processing chips or data lines requiring optical links.
ISSN
1521-3323
Language
English
URI
http://hdl.handle.net/10371/7065
DOI
https://doi.org/10.1109/TADVP.2004.842291
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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