Vol. 39, Issue 3, pp. 445-458

  1. Archive
  2. Optica Applicata Vol. 39, Issue 3, pp. 445-458 (2009)
Vol. 39 Issue 3 pp. 445-458

Self-imaging effects in curved gradient index multimode interference structures made by K+–Na+ ion exchange

Marek Blahut, Dawid Froniewski

Keywords

multimode interference structures, ion-exchange

Abstract

The paper presents an analysis of self-imaging phenomena in gradient multimode interference (MMI) structures produced by K+–Na+ ion exchange in glass. This investigation concerned curved MMI structures with various geometries – for the linear, concave function described by an exponential function, and the convex structure connected with a cosine course. The relations derived characterizing the relative shortening of the length of propagation for N-fold images have been confirmed by numerical simulations using the beam propagation method (BPM) of symmetrically excited gradient splitters 1×2.

Vol. 39
Issue 3
pp. 445-458

2.5 MB
OPTICA APPLICATA - a quarterly of the Wrocław University of Science and Technology, Faculty of Fundamental Problems of Technology