title: Numerical analysis of transmission efficiency for parabolic optical fiber nano-probe.
abstract: Theoretical calculations are performed for the transmission efficiencies of parabolic nano-probes with different shapes, based on the finite element method. It shows that the transmittance will fluctuate dramatically with the variation of either wavelength or probe shape, and the efficiency could be rather high even at long wavelengths. Subsequently, we thoroughly investigate this phenomenon and find that these fluctuations are due to the joint effect of light propagating modes and surface plasmon polaritons modes. It indicates that high transmittance can be achieved with the selection of appropriate wavelength and probe structure.
authors: Wei
authors: W
authors: Zhu
authors: Tielin
authors: T
authors: Shi
authors: Zirong
authors: Z
authors: Tang
authors: Bo
authors: B
authors: Gong
authors: Guanglan
authors: G
authors: Liao
authors: Shiyuan
authors: S
authors: Liu