Bend insensitive graded index multimode polymer optical waveguides fabricated using the Mosquito method

Asami Takahashi, Takaaki Ishigure

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

We fabricate low-loss graded index (GI) circular core multimode polymer optical waveguides with 90o bending and demonstrate low bending loss even if the bend radius is as small as 1 mm. In the several fabrication methods for GI-core polymer waveguides already proposed, we adopt the “Mosquito method†that utilize a microdispenser because the Mosquito method makes it possible to fabricate waveguides directly on board at desired places on a printed circuit board, and to draw various patterns of cores including curves. However, in the waveguides including such curved cores, the additional transmission loss due to the bending (bending loss) is a concern. Thus, we characterize the fabricated GI-core polymer waveguides with bending: using two kinds of cladding monomer with different refractive indexes for fabricating waveguides with bending. We found when the NA of waveguides was as high as 0.35, no additional loss due to bending was observed even if the bending radius is as small as 1 mm. The core diameter of the fabricated waveguides is 50 μm, and it is possible to further decrease the bending loss in the waveguides with smaller core diameter. Furthermore, utilizing the Mosquito method, we fabricate waveguides with not only horizontally curved cores but also vertically curved ones. Waveguides with vertically curved cores could make it possible to realize three-dimensionally optical wiring applicable to on-board optical interconnects.

Original languageEnglish
Title of host publicationSmart Photonic and Optoelectronic Integrated Circuits XVII
EditorsSailing He, Louay A. Eldada, El-Hang Lee
PublisherSPIE
ISBN (Electronic)9781628414561
DOIs
Publication statusPublished - 2015 Jan 1
EventSmart Photonic and Optoelectronic Integrated Circuits XVII - San Francisco, United States
Duration: 2015 Feb 112015 Feb 12

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9366
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSmart Photonic and Optoelectronic Integrated Circuits XVII
CountryUnited States
CitySan Francisco
Period15/2/1115/2/12

Keywords

  • chip-to-chip interconnection
  • polymer optical waveguide
  • the Mosquito method
  • three-dimensional wiring

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Takahashi, A., & Ishigure, T. (2015). Bend insensitive graded index multimode polymer optical waveguides fabricated using the Mosquito method. In S. He, L. A. Eldada, & E-H. Lee (Eds.), Smart Photonic and Optoelectronic Integrated Circuits XVII [93660L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9366). SPIE. https://doi.org/10.1117/12.2078880