St. Huntington et al., FIELD CHARACTERIZATION OF A D-SHAPED OPTICAL-FIBER USING SCANNING NEAR-FIELD OPTICAL MICROSCOPY, Journal of applied physics, 82(2), 1997, pp. 510-513
Scanning near-field optical microscopy is used to measure the mode pro
file and evanescent field of a Ge-doped D-shaped optical fiber. The st
ructure of the fiber is determined by differential etching followed by
an investigation of the resultant topography with an atomic force mic
roscope. This information is then used to theoretically model the expe
cted behavior of the fiber and it is shown that the theoretical result
s are in excellent agreement with the experimentally observed field. (
C) 1997 American Institute of Physics.