title: Broadband sharp 90-degree bends and T-splitters in plasmonic coaxial waveguides.
abstract: We demonstrate numerically that sharp 90° bends and T-splitters can be designed in plasmonic coaxial waveguides at deep-subwavelength scale to operate without reflection and radiation over a broad range of wavelengths, including the telecommunication wavelength of 1.55 μm. We explain the principles of the operation using a transmission line model of the waveguide in the quasi-static limit. The compact bends and T-splitters open up a new avenue for the design of densely integrated optical circuits with minimal crosstalk.
authors: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors: Wonseok
authors: W
authors: Shin
authors: Wenshan
authors: W
authors: Cai
authors: Peter B
authors: PB
authors: Catrysse
authors: Georgios
authors: G
authors: Veronis
authors: Mark L
authors: ML
authors: Brongersma
authors: Shanhui
authors: S
authors: Fan
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D008962:Models, Theoretical; D055096:Optical Devices; D055095:Optics and Photonics / Q000379:methods*; D020349:Surface Plasmon Resonance