Railing Chang Institute of Atomic and Molecular Sciences (Taiwan) Jyh-Yang Wang Institute of Atomic and Molecular Sciences and National Taiwan Univ. (Taiwan) Wunshain S. Fann Institute of Atomic and Molecular Sciences (Taiwan)
Recent application of tapered fiber tips in near field optical microscopy has demonstrated a resolution far exceed the diffraction limit. We investigate the propagation and tunneling of monochromatic light through a tapered fiber tip near a dielectric surface. The transmission rate through the tip is given for various circumstances and found to increase significantly with the dielectric constant of the sample.