Optical absorption characteristics and polarization dependence of single-layer graphene on silicon waveguide

Kaori WARABI; Rai KOU; Shinichi TANABE; Tai TSUCHIZAWA; Satoru SUZUKI; Hiroki HIBINO; Hirochika NAKAJIMA; Koji YAMADA

doi:10.1587/transele.E97.C.736

Special Section on Opto-electronics and Communications for Future Optical Network

Optical absorption characteristics and polarization dependence of single-layer graphene on silicon waveguide

Kaori WARABI, Rai KOU, Shinichi TANABE, Tai TSUCHIZAWA, Satoru SUZUKI, Hiroki HIBINO, Hirochika NAKAJIMA, Koji YAMADA

著者情報

キーワード: graphene, silicon photonics, polarizer, optical absorption

ジャーナルフリー

2014 年 E97.C 巻 7 号 p. 736-743

DOI https://doi.org/10.1587/transele.E97.C.736

詳細

抄録

Graphene is attracting attention in electrical and optical research fields recently. We measured the optical absorption characteristics and polarization dependence of single-layer graphene (SLG) on sub-micrometer Si waveguide. The results for graphene lengths ranging from 2.5 to 200 μm reveal that the optical absorption by graphene is 0.09 dB/μm with the TE mode and 0.05 dB/μm with the TM mode. The absorption in the TE mode is 1.8 times higher than that in the TM mode. An optical spectrum, theoretical analysis and Raman spectrum indicate that surface-plasmon polaritons in graphene support TM mode light propagation.

責任著者(Corresponding author)

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