Applied Physics

Plasmons on a Wire

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Science  22 Feb 2008:
Vol. 319, Issue 5866, pp. 1011
DOI: 10.1126/science.319.5866.1011c

The miniaturization of optical elements such as waveguides is limited by the wavelength of light, typically from a few hundred nanometers up to the micrometer scale. By comparison, electrical circuits can be patterned down to a few tens of nanometers. A promising route for integrating these two scales is direct conversion of an optical signal into an electrical one via surface plasmons created at the surface of metal dielectric interfaces. Schmidt et al. use a photonic crystal fiber as the optical carrier and show that they can fill in the air holes that run the length of the fiber with gold or silver, introduced in molten form, to create an array of metal nanowires embedded within the silica matrix. Characterization of the hybrid structure shows that plasmon resonances are excited in the nanowires, thereby demonstrating the direct integration of optics and nanoelectronics. — ISO

Phys. Rev. B 77, 33417 (2008).

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