Low-loss light coupling with graded-index core polymer optical waveguides via 45-degree mirrors

Yoshie Morimoto, Takaaki Ishigure

Research output: Contribution to journalArticle

5 Citations (Scopus)


We experimentally investigate the optical loss of graded-index (GI) core polymer optical waveguides with a 45-degree mirror on their one end fabricated using the photo-addressing method. In addition, we also theoretically analyze the loss of GI square-core waveguides with mirrors using a ray-trace simulation tool. Then, in the waveguide based optical link including the optical path conversions via 45-degree mirrors, we show that GI waveguides realize lower total optical loss than conventional step-index (SI) core waveguides. The lower loss in the GI waveguide link is attributed to the tight optical confinement at the core center even after reflection at the mirrors.

Original languageEnglish
Pages (from-to)3550-3561
Number of pages12
JournalOptics Express
Issue number4
Publication statusPublished - 2016 Feb 22


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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