Direct deflection method for determining refractive-index profiles of polymer optical fiber preforms.
We present a method for determining the refractive-index profile of polymer optical fiber preforms through a direct-deflection measurement. The method is simple to use, compact, and has good resolution. The profile is obtained from the deflection data by numerically integrating the differential-ray equation for a radial refractive-index gradient. Corrections for topographical deviations are also discussed. Results for both graded-index and step-index fibers are presented.
Canfield
Brian K
BK
Washington State University, Department of Physics, Pullman 99164-2814, USA. bcanfie@mail.wsu.edu
Kwiatkowski
Christopher S
CS
Kuzyk
Mark G
MG