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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 15 — Aug. 1, 2009
  • pp: 3249–3258

Vertically Pluggable and Compact 10-Gb/s$\,\times\,$12-Channel Optical Modules With Anisotropic Conductive Film for Over 100-Gb/s Optical Interconnect Systems

Atsushi Suzuki, Takaaki Ishikawa, Yoshitsugu Wakazono, Youichi Hashimoto, Hiroshi Masuda, Shuji Suzuki, Mitsuaki Tamura, Tei-ichi Suzuki, Katsuya Kikuchi, Hiroshi Nakagawa, Masahiro Aoyagi, and Takashi Mikawa

Journal of Lightwave Technology, Vol. 27, Issue 15, pp. 3249-3258 (2009)


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Abstract

We have developed a vertically pluggable and compact 12-channel optical module for intercabinet and intracabinet optical interconnections. Error-free and over 10 Gb/s operation of the optical module with an electrical and optical connector have been demonstrated. The module is designed to be 10 mm in width, 10 mm in length, and 6 mm in thickness so that it can be placed around the central processing units. This compact optical module can be mounted on the inner board area. Further, this module is vertically pluggable in the ${z}$-direction, i.e., in a direction that is perpendicular to the board. Because of the vertical pluggability, the optical modules can be repaired much more easily. The optical connector used in the low-height module has 12 fine-drawn graded-index multimode fibers (MMFs). These fibers have a high relative refractive index difference ($\Delta$) and are bent with a 2 mm radius of curvature. The electrical connector consists of an anisotropic conductive film that is sandwiched between an alumina substrate and a printed circuit board with a clamp spring. We have used the alumina substrate to mount the optical device and the driver integrated circuit, because of its high thermal conductivity. In order to reduce cost, we have not used either a microlens or a metal-coated mirror in the optical module. Furthermore, passive alignment between the MMFs and the optical device has been achieved using guide pins assembled in the alumina substrate.

© 2009 IEEE

Citation
Atsushi Suzuki, Takaaki Ishikawa, Yoshitsugu Wakazono, Youichi Hashimoto, Hiroshi Masuda, Shuji Suzuki, Mitsuaki Tamura, Tei-ichi Suzuki, Katsuya Kikuchi, Hiroshi Nakagawa, Masahiro Aoyagi, and Takashi Mikawa, "Vertically Pluggable and Compact 10-Gb/s$\,\times\,$12-Channel Optical Modules With Anisotropic Conductive Film for Over 100-Gb/s Optical Interconnect Systems," J. Lightwave Technol. 27, 3249-3258 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-15-3249

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