Graded-Index Multimode Polymer Optical Waveguide Enabling Low Loss and High Density 3D On-Board Integration

Akira Yamauchi, Yoshie Morimoto, Tadayuki Enomoto, Kyuta Suzuki, Hikaru Masuda, Takaaki Ishigure

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

9 Citations (Scopus)

Abstract

We present polymer optical waveguides with graded index (GI) circular core that have unique structures on their ends to enable very low-loss 90-degree vertical optical path conversion. In general, the signal light from the VCSELs mounted on optical printed circuit boards (OPCBs) needs to be perpendicularly bent in order to couple to the waveguides integrated on board and similarly from the waveguide to the photodetectors. Therefore, optical path conversion structures between horizontal and vertical directions are required on the ends of waveguides. In the case of multimode polymer optical waveguides with step-index (SI) core, 45-degree mirrors at the waveguide ends should be a well-known technique when they are integrated on boards. However, a couple of dB of optical loss at lowest has generally been observed at the mirrors, which is very critical for the limited link power budget of polymer waveguide links. In this paper, we demonstrate that GI-cores in polymer waveguides enable 3-dB loss advantage over the SI-core waveguides in the optical path conversion.

Original languageEnglish
Title of host publicationProceedings - ECTC 2016: 66th Electronic Components and Technology Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages490-496
Number of pages7
Volume2016-August
ISBN (Electronic)9781509012039
DOIs
Publication statusPublished - 2016 Aug 16
Event66th IEEE Electronic Components and Technology Conference, ECTC 2016 - Las Vegas, United States
Duration: 2016 May 312016 Jun 3

Other

Other66th IEEE Electronic Components and Technology Conference, ECTC 2016
CountryUnited States
CityLas Vegas
Period16/5/3116/6/3

Keywords

  • Graded-index
  • Optical interconnect
  • Polymer optical waveguides
  • The Mosquito method

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Yamauchi, A., Morimoto, Y., Enomoto, T., Suzuki, K., Masuda, H., & Ishigure, T. (2016). Graded-Index Multimode Polymer Optical Waveguide Enabling Low Loss and High Density 3D On-Board Integration. In Proceedings - ECTC 2016: 66th Electronic Components and Technology Conference (Vol. 2016-August, pp. 490-496). [7545476] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECTC.2016.306