A new method for the reconstruction of refractive index profiles of optical waveguides from the intensity profile of the fundamental mode, as measured with near-field (NF) technique, is presented. In this procedure, an analytical expression of the index profile as function of some parameters such as the maximum index variation and depth is given. By a finite differences (FD) algorithm, the wave equation is solved in order to find the effective index and the intensity profile of the fundamental mode. The input parameters are then varied in order to minimize the difference between the measured intensity profiles and the calculated ones. An application of the method to the special case of planar Ti:Mg:LiNbO3 waveguides is presented.


PDF Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription