Link power budget advantage in GI-core polymer optical waveguide link for optical printed circuit boards

Sho Yakabe, Takaaki Ishigure, Shigeru Nakagawa

研究成果: Conference contribution

4 被引用数 (Scopus)


For further advancement of next-generation high-performance computers, low-power consumption, high-density, and low-cost optical interconnection technologies should be adopted, and thus, optical printed circuit boards (O-PCBs) integrating polymer optical waveguides would be a key device. In particular, for low-power consumption, the link power budget should be low enough. In the optical link that consists of two waveguides on PCBs and a graded-index (GI) multimode fiber (MMF) connecting the two PCBs, such a low power budget is expected when GI-core waveguides are utilized. Essentially low coupling loss between the GI-core waveguide and a GI-MMF is one of the reasons of the low power budget, since the mode power profile mismatch between MMFs and GI-core waveguides is smaller than that between MMFs and SI-core waveguides. In this paper, we compose an optical link of vertical cavity surface emitting laser (VCSEL)-waveguide: SI or GI-MMF-waveguide: SI or GI-PD, and quantitatively evaluate the coupling loss at each connection point. When all the components are perfectly aligned, the total coupling loss is 1.9 dB in the link with GI-core waveguide. On the other hand, the SI-core waveguide link shows 0.8 dB higher coupling loss (2.72dB) than the GI-core waveguide link. When a misalignment of ±10 ìm is added at each connection and 50-ìm gaps are added at both VCSEL-waveguide and waveguide-PD connections, the GI-waveguide link demonstrate approximately 2-dB advantage in the power budget over the SI-waveguide link. Given limited power budget consideration for high bit rate optical links (∼25 Gb/s), GI-core waveguide enabling low link power budget would be a promising component for O-PCBs..

ホスト出版物のタイトルOptoelectronic Interconnects XII
出版ステータスPublished - 2012 3月 26
イベントOptoelectronic Interconnects XII - San Francisco, CA, United States
継続期間: 2012 1月 232012 1月 25


名前Proceedings of SPIE - The International Society for Optical Engineering


OtherOptoelectronic Interconnects XII
国/地域United States
CitySan Francisco, CA

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学


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