Concurrent implementation of the complementary operators method in 2-D space

The author presents a novel implementation of the complementary operators method (COM). In contrast to the original implementation of COM, in this approach, the complementary operators are applied concurrently on a set of fields in the boundary region. This not only allows the cancellation of first-order reflections, but the reduction of all subsequent reflections as well. A numerical example is given to validate this new scheme and to show that it results in unprecedented suppression of artificial reflections.