An ultra compact 1x2 wavelength demultiplexer based on multimode interference with an index-modulation region

Abstract

In this paper, we propose a novel structure for an ultra-compact wavelength demultiplexer with an index-modulation (IM) region incorporated into a multimode interference coupler. The device length can be reduced by using asymmetric output ports and the performance of this device has been enhanced by changing the phase within the region. (C) 2004 Wiley Periodicals. Inc.