We studied the energy distribution and leakage in a single curved polymer nanowire .Through theoretical simulation , we found that the energy distribution in the curved nanowire is related to it’s the radius of curvature、wavelength and the refractive index of the environment.When the radius of curvature is 1 micron, the bending loss of the polymer nanowire placed on the substrate in the air is greater than its transmission loss, and the degree of energy leakage at the bend is affected by the refractive index of the environment. The results of this study provide strong theoretical and support for the design and application of micro-nano sensors based on curved micron waveguide.
KEYWORDS: Silver, Near field optics, Near field scanning optical microscopy, Surface plasmons, Near field, Plasmonics, Light scattering, Magnesium fluoride, Integrated optics, Nanowires
We demonstrate surface plasmon (SP) excitation in Ag nanowires directly coupled with a microfiber in the presence of a
MgF2 substrate. With scanning near-field optical microscopy, evident light output from the Ag nanowire and the
evanescent field of the coupling structure are observed in the near-field optical image. The tip enhancement of a Ag
nanowire is also analyzed from the optical intensity graph. Results presented in this work suggest a simple SP excitation
approach for plasmonic and photonic circuits with high compactness.
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