Accurate core position control in polymer optical waveguides using the Mosquito method for three-dimensional optical wiring

Kumi Date, Takaaki Ishigure

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

Polymer optical waveguides with graded-index (GI) circular cores are fabricated using the Mosquito method, in which the positions of parallel cores are accurately controlled. Such an accurate arrangement is of great importance for a high optical coupling efficiency with other optical components such as fiber ribbons. In the Mosquito method that we developed, a core monomer with a viscous liquid state is dispensed into another liquid state monomer for cladding via a syringe needle. Hence, the core positions are likely to shift during or after the dispensing process due to several factors. We investigate the factors, specifically affecting the core height. When the core and cladding monomers are selected appropriately, the effect of the gravity could be negligible, so the core height is maintained uniform, resulting in accurate core heights. The height variance is controlled in ±2 micrometers for the 12 cores. Meanwhile, larger shift in the core height is observed when the needle-tip position is apart from the substrate surface. One of the possible reasons of the needle-tip height dependence is the asymmetric volume contraction during the monomer curing. We find a linear relationship between the original needle-tip height and the core-height observed. This relationship is implemented in the needle-scan program to stabilize the core height in different layers. Finally, the core heights are accurately controlled even if the cores are aligned on various heights. These results indicate that the Mosquito method enables to fabricate waveguides in which the cores are 3-dimensionally aligned with a high position accuracy.

本文言語English
ホスト出版物のタイトルOptical Interconnects XVII
出版社SPIE
10109
ISBN(電子版)9781510606593
DOI
出版ステータスPublished - 2017
イベントOptical Interconnects XVII - San Francisco, United States
継続期間: 2017 1月 302017 2月 1

Other

OtherOptical Interconnects XVII
国/地域United States
CitySan Francisco
Period17/1/3017/2/1

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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