Studies of the self-imaging effect in multimode waveguides

Self–imaging effect in multimode waveguides with longitudinal periodicity

“…For our studies we used the multimode waveguide shown in Figure 2, in which we introduced periodic perturbations (see Figure 8). In particular, we were interested in their influence on the field distribution [8]. The monomode waveguide at the input was used to obtain a suitable input field; i.e.…”

“…The MMI is at the beginning of the work to be presented here. However, we go beyond the structure of a conventional MMI to investigate multimode waveguides with additional longitudinal period-icity [8]. In other words, the wavefield has to obey two different conditions (lateral and longitudinal periodicity) and we want to find out how such wavefields propagate.…”

Analyzing the Optimum Parameter of an 1x2 MMI Splitter

“…Multimode interference in optical waveguides has interesting selfimaging properties, which have extensively been investigated and utilized in many integrated optical devices [12,13]. MMI devices based on the principle of self-imaging, according to which in a multimode waveguide an input field profile is reproduced in single and multiple images at periodic interval along the propagation direction of the waveguide.…”