Adiabatic propagation and nano-guiding of two-dimensional optical waves in wedged negative dielectric gap waveguides

Junichi Takahara; Noriyuki Miyoshi; Yohei Matsui; Fuminori Kusunoki

doi:10.1117/12.680298

11 September 2006 Adiabatic propagation and nano-guiding of two-dimensional optical waves in wedged negative dielectric gap waveguides

Junichi Takahara, Noriyuki Miyoshi, Yohei Matsui, Fuminori Kusunoki

Author Affiliations +

Proceedings Volume 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II; 632403 (2006) https://doi.org/10.1117/12.680298
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Wedged negative dielectric gap waveguide has been studied theoretically. FDTD simulations show adiabatic wavenumber conversion in coupled mode of surface plasmon polariton along the wedged structure. In addition, field enhancement has been observed at the output of the wedged structure even in large propagation loss of metals. We propose wedged negative dielectric gap waveguide as an efficient nano-optical coupler between optical fibers to nano-optical circuits. Propagation modes in metal gap waveguide formed on a prism have been studied experimentally by using attenuated total reflection method.

Citation Download Citation

Junichi Takahara, Noriyuki Miyoshi, Yohei Matsui, and Fuminori Kusunoki "Adiabatic propagation and nano-guiding of two-dimensional optical waves in wedged negative dielectric gap waveguides", Proc. SPIE 6324, Plasmonics: Nanoimaging, Nanofabrication, and their Applications II, 632403 (11 September 2006); https://doi.org/10.1117/12.680298

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