A Novel Planar Waveguide Super-Multiple-Channel Optical Power Splitter

In this paper, we have proposed a novel planar waveguide optical-power-splitter design with a large number of splitting channels. The design uses the wavefront lateral interference in light propagation in a slab waveguide, with its core properly adjusted in different areas for achieving different effective indices for the required phase delays. Therefore, the whole structure is equivalent to a nonblocking all-pass filter, hence, suffers a very …